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This Week's Best Amazon Deals You Can Still Get

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amazon / istock

As a recurring feature, we share some amazing Amazon deals we’ve turned up. These items were the ones that were the most popular with our readers this week, and they’re still available.

Mental Floss has affiliate relationships with certain retailers (including Amazon) and may receive a small percentage of any sale. But we only get commission on items you buy and don’t return, so we’re only happy if you’re happy. Good luck deal hunting!

GADGETS, TOYS, AND MEDIA

SENSO Bluetooth Headphones, Best Wireless Sports Earphones w/ Mic IPX7 Waterproof HD Stereo Sweatproof Earbuds for Gym Running Workout 8 Hour Battery Noise Cancelling Headsets for $36.97 (list price $169.99)

Anker 6ft Nylon Braided USB Cable with Lightning Connector [Apple MFi Certified] for iPhone 7 / 7 Plus / 6s / 6s Plus / 6 / 6 Plus, iPad Pro Air 2 and More (Silver) for $12.99 (list price $35.99)

Jackery Giant+ Premium 12,000 mAh Dual USB Portable Battery Charger & External Battery Pack (Total 3.1A Output) with Panasonic Battery Cells for iPhone 7, 7 Plus, Galaxy & Other Smart Devices (Silver) for $24.99 (list price $29.99)

UE ROLL 2 Atmosphere Wireless Portable Bluetooth Speaker (Waterproof) for $73.00 (list price $99.99)

SanDisk Ultra Fit 128GB USB 3.0 Flash Drive (SDCZ43-128G-GAM46) [Newest Version] for $32.90 (list price $39.99)

iPhone 7 6S 6 Screen Protector Glass, amFilm iPhone 7 Tempered Glass Screen Protector for Apple iPhone 7, iPhone 6S, iPhone 6 2016, 2015 (2-Pack) for $7.99 (list price $29.99)

Holigoo 2 in 1 Cellphone Camera Lens kit, 0.6X HD Wide Angle Lens & 15X Macro Lens, Clip-On Professional Cell Phone Lens for iPhone 7/iPhone 6s/6s Plus/6/5, Samsung & Most Smartphones for $19.99 (list price $99.90)

Car Charger, Maxboost 4.8A/24W 2 Smart Port Car Charger [Black] for iPhone 7 6S Plus 6 Plus 6 5SE 5S 5 5C 4S, Samsung Galaxy S7 S6 Edge, Note 7 5 4 S5 Tab S,LG G5 G4,HTC,Nexus 5X 6P,iPads Pro Portable for $9.99 (list price $39.99)

Mkeke Apple Watch Band 38mm iWatch Strap Premium Vintage Genuine Leather Replacement Watchband with Secure Metal Clasp Buckle for Apple Watch Sport Edition (Dark Brown) for $18.99 (list price $24.99)

Travel Adapter,UROPHYLLA Universal Adapter Wall Charger with Dual 2.5A USB Ports Travel Plug Adapter for $13.88 (list price $25.99)

Portable Chargers RAVPower External Battery Pack 16750mAh 4.5A Dual USB Output External Phone Charger Battery Bank Power Bank (iSmart 2.0 Technology) for Nintendo Switch, iPhone 7, Galaxy S8 - Black for $23.99 (list price $99.99)

Jackery Giant+ Premium 12,000 mAh Dual USB Portable Battery Charger & External Battery Pack (Total 3.1A Output) with Panasonic Battery Cells for iPhone 7, 7 Plus, Galaxy & Other Smart Devices (Silver) for $23.99 (list price $29.99)

Trianium Armband For iPhone 7/6/6S Plus, LG G6 G5, Galaxy s8 s7 s6 Edge, Note 5 (fits Otterbox Defender / Lifeproof case) ArmTrek Pro Sport Exercise Running Pouch Key Holder - Hiking,Biking,Walking for $9.99 (list price $20.97)

MEKO (2 in 1 Precision Series) Disc Stylus/Styli (2 Pcs) Bundle with 4 Replaceable Disc Tips, 2 Replaceable Fiber Tips (Black/Black) for $14.99 (list price $24.99)

Zilu Car Phone Mount, Cell Phone Holder for Dashboard and Windshield, Car Accessories for iPhone Andorid and More-Retail Packaging for $11.99 (list price $49.99)

VicTsing FM Transmitter, Bluetooth FM Transmitter Radio Adapter Car Kit With 5V 2.1A USB Car Charger MP3 Player Support TF Card USB Flash Drive for $19.99 (list price $49.99)

Anker 6ft Nylon Braided USB Cable with Lightning Connector [Apple MFi Certified] for iPhone 7 / 7 Plus / 6s / 6s Plus / 6 / 6 Plus, iPad Pro Air 2 and More (Space Gray) for $11.99 (list price $35.99)

Photive Hydra Wireless Bluetooth Speaker. Waterproof Rugged Portable with built in Subwoofer and Long Battery for $29.95 (list price $99.95)

Nite Ize Curvyman Cord Supervisor Earbud Organizer, Headphone Cord Wrap - Compact, Durable, and Lightweight, Black for $2.99 (list price $7.07)

VicTsing VGA To HDMI Output 1080P HD Audio TV AV HDTV Video Cable Converter Adapter for $14.99 (list price $19.99)

AUX Cable [ 2-Pack, 4ft/1.2M - Copper Shell, Hi-Fi Sound Quality] - iVanky 3.5mm Audio Cable Male to Male / Auxiliary Cable / Aux Cord for Car Stereos, iPod, iPhone, Beats, SkullCandy and More - Black for $7.99 (list price $21.99)

Klutz LEGO Chain Reactions Craft Kit for $16.19 (list price $21.99)

Oliasports Fidget Cube Relieves Stress & Anxiety, Black for $2.20 (list price $29.00)

Cootie Game for $9.94 (list price $12.99)

Shrinky Dinks Cool Stuff Activity Set for $7.21 (list price $10.00)

Melissa & Doug Makin' Music Beginner Wooden Kazoo for $5.69 (list price $6.69)

Funko POP TV: Golden Girls Dorothy Action Figure for $9.97 (list price $12.00)

KITCHEN

Digital Meat Themometer/Timer with Probe,Touchscreen Oven Thermometer for Kitchen BBQ Grilling Food barbecue and Smoker for $10.97 (list price $35.99)

Best Original Smooth Edge Safety Can Opener by Zulu Quality for $16.95 (list price $29.95)

Helen Chen’s Asian Kitchen Burnished Bamboo Stir Fry Spatula and Cooking Utensil, 13-Inch for $3.94 (list price $4.41)

Rubbermaid FreshWorks 6.3 Cup Medium Produce Saver Food Storage Container, Green for $9.76 (list price $10.92)

Messermeister Chantry Sharpener-scarlet Red for $68.23 (list price $75.00)

Vremi Olive Oil Dispenser Bottle - 17 Oz Oil Bottle Glass with No Drip Bottle Spout - Oil Pourer Dispensing Bottles for Kitchen - Olive Oil Glass Dispenser to Measure Cooking Vegetable Oil and Vinegar for $17.99 (list price $34.99)

8" Non Stick, Oven Safe, Dish washer safe Ceramic Coated Fry Pan -Copper for $18.25

Equinox Professional Chef's Knife - 8 inch Full Tang Blade - 100% German Steel with Protective Bolster for $14.95 (list price $49.99)

Rubbermaid 17.3 Cup FreshWorks Produce Saver Food Storage Container, Large, Green for $10.22 (list price $16.99)

Lodge L9OG3 Cast Iron Round Griddle, Pre-Seasoned, 10.5-inch for $14.29 (list price $24.00)

Lavatools PT12 Javelin Digital Instant Read Meat Thermometer (Chipotle) for $24.99

DRAGONN Zester Grater Sharp Stainless Steel Blade with Black Handle, Safety Cover and Rubber Footings for $9.95 (list price $19.95)

Set of 2 Moscow Mule Copper Mugs with Shot Glass - Two 16 Oz Copper Moscow Mule Mugs - Solid Copper Hammered Mug - Copper Cups for Moscow Mules for $69.99 (list price $69.99)

GLOUE Silicone Spatula Set - 4-piece 450oF Heat-Resistant Baking Spoon & Spatulas - Ergonomic Easy-to-Clean Seamless One-Piece Design - Nonstick - Dishwasher Safe - Solid Stainless Steel - Multicolor for $9.95 (list price $22.97)

Adjustable Mandoline Slicer - 5 Blades - Vegetable Cutter, Peeler, Slicer, Grater & Julienne Slicer,Green for $12.99 (list price $20.99)

OXO Good Grips 3-Piece Funnel and Strainer Set for $7.95 (list price $9.99)

Baker's Secret 1061483 10-by-16-Inch Nonstick Cooling Rack, Set of 2 for $6.58 (list price $19.99)

AirBake Nonstick Cookie Sheet, 14 x 16 in for $15.52 (list price $16.99)

Norpro 8oz/240ml Porcelain Ramekins, Set of 4 for $10.75 (list price $26.85)

Rubbermaid Easy Find Lid Food Storage Container, BPA-Free Plastic, 6-Piece Set for $6.18 (list price $8.02)

Wilton Recipe Right Nonstick 12-Cup Regular Muffin Pan for $4.91 (list price $8.99)

Cuisinart Advantage 12-Piece Knife Set, Bright (6 knives and 6 knife covers), C55-01-12PCKS for $17.01

di Oro Living - Silicone Spatulas - 600ºF Heat-Resistant Spatula - Seamless Design - Pro-Grade Non-Stick Silicone Rubber with Reinforced Stainless Steel S-Core Technology (3-Piece Set, Black) for $27.97 (list price $39.95)

Deiss PRO Dual Julienne Peeler & Vegetable Peeler — Non-slip Comfortable Handle — Amazing Tool for Making Delicious Salads and Veggie Noodles for $9.88 (list price $21.22)

AmazonBasics 6-Piece Bakeware Set for $15.64 (list price $18.40)

Presto 03500 Belgian Bowl Waffle Maker, Black for $26.77 (list price $45.99)

Herb Scissors, X-Chef Kitchen Scissors 5 Blades Stainless Steel with Clean Comb Cover Fast and Easy Clean for $9.99 (list price $24.99)

Set of 9 Grey Beverage Chilling Stones [Chill Rocks] Whiskey Stones for Whiskey and other Beverages - in Gift Box with Velvet Carrying Pouch - Made of 100% Pure Soapstone - by Quiseen for $8.95 (list price $18.99)

RollerMaster Rolling Pin - 25% Less Effort Working the Dough - Upgrade Your Baking - Non-Stick & Zero Maintenance - French Metal Stainless Steel Construction (Non Marble Pins) - [Gift Packaging] for $12.99 (list price $14.99)

Rubbermaid FreshWorks 2.5 Cup Small Produce Saver Food Storage Container, Green for $6.06 (list price $8.74)

RTIC Stainless Steel Can Cooler 12oz for $10.02 (list price $12.00)

Vremi 13 Piece Mixing Bowl Set - BPA Free Plastic Mixing Bowls Nested Colorful with Measuring Cups and Teaspoons - Large Small Stackable Nesting Kitchen Bowls with Handles and Pour Spout for Baking for $14.99 (list price $39.99)

Icing Spatula, 7.5" - 10.8" - 12.8" Offset Cake Spatula Set with Wooden Handle by 1Easylife, Professional Stainless Steel Cake Decorating Spatulas (4"-6"-8" Blade) for $25.99 (list price $34.99)

Lifewit Height Adjustable Pan Pot Oraganizer Rack, 5-Tier Kitchenware Cookware Holder Hanger Shelves Kitchen Cabinet Worktop Countertop Storage Solutions, Stainless Steel for $14.99 (list price $49.99)

Paksh Novelty Glass Pitcher with Lid and Spout Bundled with Cloth, 41-Ounce (Set of 2) - White for $29.99 (list price $29.99)

HOME

Syntus Himalayan Salt Lamp Natural Crystal Salt Light Glow Hand Carved Night Lights Wall light with UL Listed Plug for Lighting, Decoration and Air Purifying for $12.99 (list price $21.99)

Brightech - Litespan LED Reading and Crafting Floor Lamp - Dimmable Full Spectrum LED Light - Fully Adjustable Neck - 12 Watts - Jet Black for $69.99 (list price $120.00)

Honeywell HT-908 Turbo Force Room Air Circulator Fan, Black, 15 Inch for $26.49 (list price $32.19)

Oreck Commercial BB900DGR XL Pro 5 Super Compact Canister Vacuum, 30' Power Cord for $79.45 (list price $123.75)

Smart Home Bedding Super Plush Pillow Dust Mite Resistant Down Alternative (Queen/Standard, 2 Pack) for $21.99 (list price $59.99)

Queen Comforter Duvet Insert White - Quilted Comforter with Corner Tabs - Hypoallergenic, Plush Siliconized Fiberfill, Box Stitched Down Alternative Comforter by Utopia Bedding for $32.99 (list price $69.99)

Whitmor 6779-3044 Double Rod Freestanding Closet with Steel and Resin Frame, 45.2 by 68-Inch, Silver for $40.16 (list price $47.99)

Pumice Cleaning Stone with Handle (2 Pack) - High Density, Sturdy, Fine Grit for $14.99 (list price $16.99)

Pro Breeze PB-02-US Electric Mini Dehumidifier, 1100 Cubic Feet for $49.99 (list price $79.99)

Tide PODS Free & Gentle HE Turbo Laundry Detergent Pacs 81-load Tub for $18.99 (list price $25.75)

Doctor Who Blanket - Large Dr. Who TARDIS Micro Raschel Throw - 50" x 89" for $18.99 (list price $29.99)

Quilted Northern Ultra Plush Toilet Paper, 24 Supreme (92+ Regular) Bath Tissue Rolls for $21.87 (list price $24.79)

AmazonBasics Rust Resistant Shower Curtain Roller Hook Rings for $2.05 (list price $7.99)

Clorox Disinfecting Wipes Value Pack, Fresh Scent and Citrus Blend, 225 Count for $9.97 (list price $11.97)

Classic Brands Cool Gel 8 Inch Gel Memory Foam Mattress, Queen Size for $255.32 (list price $569.00)

VIVA Choose-A-Sheet* Paper Towels, White, Big Roll, 24 Rolls for $23.92 (list price $38.99)

Tide Mountain Spring HE Turbo Powder Laundry Detergent, 68 Loads, 95 Oz for $12.96 (list price $17.96)

Yankee Candle Company Midsummer's Night Large Jar Candle for $19.87 (list price $27.99)

Set of 4 - 18 x 18 Premium Hypoallergenic Stuffer Pillow Insert Sham Square Form Polyester, Standard / White - MADE IN USA for $22.99 (list price $55.99)

LUCID 2" 5-Zone Lavender Memory Foam Mattress Topper, Queen for $44.99 (list price $89.99)

Sterilite 14138606 Layer Stack & Carry Box, 10-5/8-Inch for $12.10 (list price $15.95)

Poo-Pourri Before-You-Go Toilet Spray 4-Ounce Bottle, Vanilla Mint Scent for $10.78 (list price $14.99)

O-Ion B-1000 Permanent Filter Ionic Air Purifier Pro Ionizer with UV-C Sanitizer, New for $67.95 (list price $89.95)

Sunbeam Microplush Heated Throw, Walnut, TSM8US-R470-25B00 for $32.76 (list price $43.98)

ClosetMaid 5786 Cubeicals Fabric Drawer, Canteen/Brown for $3.86 (list price $11.19)

Premium Mildew Resistant Shower Curtain Anti-bacterial Heavy-Duty10-Gauge Waterproof Liner - 72x72 Inch - Clear for $11.04 (list price $34.99)

Phantoscope New Living Blue&Green Decorative Throw Pillow Case Set of 4 for $19.99 (list price $35.96)

Black Leather Jewelry Box Travel Case and Lock for $49.99 (list price $158.00)

Kitchen Basics 461710 Microfiber Dish Drying Mat, Red for $2.86 (list price $5.99)

HEALTH AND BEAUTY

Wazor Hair Dryer 1875W Ceramic Blow Dryer Negative Ionic Dryer Lightweight With 2 Speed and 3 Heat Settings Cool Shot Button Red for $35.99 (list price $109.99)

Braun Series 7 790cc Cordless Electric Foil Shaver for Men with Clean and Charge Station - Packaging May Vary for $181.52 (list price $289.99)

Crest 3D White Luxe Whitestrip Teeth Whitening Kit, Glamorous White, 14 Treatments - Packaging May Vary for $31.25 (list price $44.99)

Active Wow Teeth Whitening Charcoal Powder Natural for $24.99 (list price $29.99)

TheraBreath Dentist Recommended Fresh Breath Oral Rinse - Mild Mint Flavor, 16 Ounce (Pack of 2) for $19.98 (list price $25.19)

Remington MB4045B The Beardsman Beard Boss Full Beard Kit, Platinum for $39.58 with on-screen coupon (list price $59.99)

Berta 1875W Negative Ion Hair Blow Dryer with 2 Speed and 3 Heat Setting, Black for $35.99 (list price $99.99)

Biore Deep Cleansing Pore Strips Combo Pack, 24 Count Strips for $11.99 (list price $13.99)

Gillette Mach3 Men's Razor Blade Refills, 10 Count (packaging may vary) for $19.97 (list price $28.99)

Moroccanoil Curl Defining Cream, 8.5 ounce for $30.33 (list price $35.79)

Neutrogena Makeup Remover Cleansing Towelettes & Wipes Refill Pack, 25 Count (Pack of 6) for $15.12 (list price $37.14)

Joan Rivers Beauty Great Hair Day Fill in Powder- Brunette for $29.99 (list price $32.00)

Philips Sonicare Essence Sonic Electric Rechargeable Toothbrush, White for $24.97 (list price $49.99)

Gillette Fusion Manual Men’s Razor Blade Refills, 12 Count for $33.97 (list price $47.99)

Cetaphil Restoraderm, Eczema Calming Body Wash, 10 Ounce for $12.95 (list price $14.39)

Clinique Clarifying Lotion 2 for Unisex, 13.5 Ounce for $24.92 (list price $25.18)

Premium Teeth Whitening Kit for Home use - Made in USA - Faster Results Than Tooth Whitening Strips, Pen and Toothpaste. Safe for Sensitive Teeth for $24.99 (list price $39.99)

24K Gold Facial Mask from Majestic Pure, 8.8 Oz - Ancient Gold Mask Formula Reduces the Appearances of Wrinkles and Fine Lines, Helps with Acne and Firming Up Skin for $24.50 (list price $49.50)

Colgate Wisp Portable Mini-Brush Max Fresh, Peppermint, 24 Count for $3.59 (list price $7.99)

Kerastase Densifique Bain Densite 250ml - Bodifying Shampoo for $21.30

Plackers Twin Line Whitening Flosser, 75 count (Pack of 6) for $11.76 (list price $17.00)

L'oreal Paris Visible Lift Blur Foundation, 204 Creamy Natural, 1.3 Fluid Ounce for $10.99 (list price $14.99)

Cetaphil Daily Advance Lotion, Ultra Hydrating, 16 Ounce for $10.16 (list price $16.99)

BS-MALL(TM) Makeup Brushes Premium Makeup Brush Set Synthetic Kabuki Cosmetics Foundation Blending Blush Eyeliner Face Powder Brush Makeup Brush Kit (10pcs, Golden Black) for $7.99 (list price $39.99)

Cetaphil Gentle Skin Cleanser, For all skin types, 16-Ounce Bottles (Pack of 2) for $17.26 (list price $27.98)

Harperton Nippit - Precision Toenail Clippers for Thick or Ingrown Toenails for $18.86 (list price $38.99)

OFFICE, SCHOOL, AND CRAFTS

Paper Mate Flair Felt Tip Pens, Medium Point, Limited Edition Candy Pop Pack, 6 Count (1982365) for $13.34

Filofax Malden Kingfisher Personal Leather Organizer Agenda 2017 Calendar Diary with DiLoro Jot Pad Refills 026026 for $87.95 (list price $113.50)

Ohuhu 48-color Colored Pencils/ Drawing Pencils for Sketch/Secret Garden Coloring Book(Not Included) for $13.99 (list price $48.00)

Tiergrade 60 x Decorative Powerful Magnets Set for Map, Calendar, Whiteboard, Refrigerator, Kitchen, School, and Office for $14.99 (list price $20.99)

VuPoint Solutions Magic Wand Portable Scanner for $49.99 (list price $67.49)

Best RFID Blocking Credit Card Holder, MaxGear™ Stainless Steel Card Holder Case for Travel and Work, Steel Metal Slim Wallet , Credit Card Case for Business Cards, Credit Cards, and Driver License for $8.99 (list price $16.99)

BIC Marking Permanent Marker Fashion Colors, Fine Point, Assorted Colors, 24-Count for $10.88 (list price $19.99)

Stabilo Pens Item 8830-1 Point 88-Fine Point-30 Color Wallet of Coloring Pens/Fineline Markers-Includes 30 Unique Colors for $15.53 (list price $28.50)

Artist's Choice 125 Gel Pen XL Set with Case (Individual Colors) for $16.99 (list price $39.99)

MaxGear RFID Blocking Wallet, Women's Credit Card Holder/Wallet for Travel and Work, Genuine Leather Accordion Zipper Wallet for Business Cards, ID Cards, Credit Cards and Money Rose Red02 for $13.99 (list price $29.99)

XBoard Double-Sided Magnetic Whiteboard Set, 15 x 12-Inch, Dry Erase Board with 1 Magnetic Dry Eraser, 3 Dry Erase Markers and 4 Push Pin Magnets for $13.99 (list price $27.98)

Paper Mate Flair Porous-Point Felt Tip Pen, Medium Tip, Limited Edition Tropical Vacation Colors, 6-Count for $6.77 (list price $12.43)

LIHIT LAB Slim Pen Case, Black, 7.5 x 4.3" (A-7585-24) for $10.95 (list price $12.96)

Sharpie 36671 Water-Based Poster Paint Marker, Assorted Colors, 5-Pack for $10.35 (list price $17.99)

Sahara Sailor Tungsten Steel LED Flashlight Tactical Pen with Glass Breaker, Black for $18.99 (list price $29.99)

16 RFID Blocking Sleeves (12 Credit Card Holders & 4 Passport Protectors) Ultimate Premium Identity Theft Protection Sleeve Set for Men & Women. Smart Slim Design perfectly fits Wallet / Purse. for $10.95 (list price $28.99)

Biout Name Tag LED Name Badge with Magnet and Pin - Red for $9.99 (list price $11.99)

Office Gift For Cat Lovers - Moodycards! Make Everyone Laugh with These Adorable and Hilarious Cats - Let The Kittys Tell Everyone How You Feel! A Terrific Office Gift! 25 Different Moods for $8.88 (list price $19.95)

Elmer's All Purpose School Glue Sticks, Washable, 30 Pack, 0.24-ounce sticks for $9.86 (list price $14.30)

FIDGET TOYS BPA-FREE (Package of 8) by KeepCalm - Anti-Stress, Anxiety for Adults and Children - Soothing Marble Fidgets Help With ADHD and Autism - Helps Relieve Stress and Increase Focus for $9.77 (list price $35.00)

Columbian Invitation Envelopes, A2, 4-3/8 x 5-3/4 Inches, White, 100 Per Box (CO198) for $7.98 (list price $9.48)

OUTDOORS, GARDEN, AND SPORTS

QPAU Patio Umbrella Light 3 Lighting Mode Wireless 28 LED Lights At 220 lux Umbrella Pole Light for Patio Umbrellas, Outdoor Use, or Camping Tents Battery Operated for $10.99 (list price $24.99)

Kryptonite Keeper Integrated Chain Bicycle Lock, Grey, 32-Inch for $32.95 (list price $36.45)

LUXUR Nylon Waterproof Laptop Backpack Casual School Business Travel Daypack Fit 16 Inch Laptop Black for $22.99 (list price $89.69)

4ucycling Raincoat Easy Carry Wind Rain Jacket Poncho Coat Outdoor,Black one Size,Updated Version for $19.99 (list price $39.99)

Fresh Fusions 32oz Fruit Infuser Water Bottle Sleeve Combo Set - 32 oz Capacity- Infusion Set + An Insulated Sleeve (Raspberry) for $14.97 (list price $24.97)

X-Mat Original Pet Training Mat, Firm, 18-Inch for $11.87 (list price $12.99)

The Beach Vault for $69.99 (list price $84.99)

Pleasant Hearth - 32mm Heavy Duty Log Rack for $22.40 (list price $34.99)

Salzmann 3M Scotchlite Reflective Backpack Cover, Rucksack Cover, Waterproof, Rainproof, 25-36 litres for $13.69 (list price $16.99)

Arcturus All Weather Outdoor Survival Blanket - All Purpose, Thermal, Reflective - 60" x 82" (Orange) for $19.99 (list price $24.99)

Vet's Best Comfort Fit Disposable Male Wrap, 12 count for $11.99 (list price $15.49)

NUTRO WHOLESOME ESSENTIALS Puppy Farm-Raised Chicken, Brown Rice & Sweet Potato Recipe 5 Pounds for $13.49 (list price $14.99)

GoPets Dematting Comb with 2 Sided Professional Grooming Rake for Cats & Dogs for $21.00 (list price $39.99)

Bridgestone Golf E6 Speed White 2017 e6 Speed White (12-Ball Pack) for $20.00 (list price $40.00)

VicTsing Outdoor Travel 8 x 21 Zoom Mini Binoculars Telescope with Wide Angle for Outdoor Sightseeing, Camping, Birdwatching, Hunting, Golf for $10.99

Bridgestone Golf E6 Soft White 2017 e6 Soft White (12-Ball Pack) for $24.99 (list price $28.99)

Franklin Sports PVC Vibe Playground Ball, 8.5" for $13.50 (list price $14.99)

ELECTRONICS

SanDisk Ultra 256GB MicroSDXC UHS-I Card with Adapter (SDSQUNI-256G-GN6MA). for $160.85 (list price $199.99)

SanDisk iXpand Flash Drive 128GB for iPhone and iPad, Black/Silver, (SDIX30C-128G-GN6NE) for $90.35 (list price $119.99)

NETGEAR N300 Wi-Fi Range Extender, Essentials Edition (EX2700) for $24.99 (list price $39.99)

LG BPM25 Blu-Ray Disc Player w/ Streaming Services(Certified Refurbished) for $43.98 (list price $57.87)

Eton FRX5 – All Purpose Weather Alert Radio with Bluetooth for $79.99 (list price $99.99)

AUKEY WiFi Adapter, AC600 Dual Band USB Wireless Adapter with High-Gain Antenna for Windows 7, 8, 10, XP, Vista and Mac OS X 10.9, 10.10, 10.11 for $10.99 (list price $25.99)

Sabrent 4-Port USB 3.0 Hub with Individual Power Switches and LEDs (HB-UM43) for $9.99 (list price $15.99)

Verbatim Slimline Corded USB Keyboard, Black (99201) for $7.99 (list price $10.00)

Logitech G502 Proteus Spectrum RGB Tunable Gaming Mouse, FPS Mouse for $58.62 (list price $79.99)

VIOTEK 32 inch LED Computer Monitor -1920x1080 Full HD, VGA DVI and HDMI, Model H320 for $229.99 (list price $249.99)

ELEGIANT USB Powered Sound Bar for Computer Desktop Laptop PC, Black for $29.99 (list price $74.99)

ViewTV Flat HD Digital Indoor TV Antenna - 25 Miles Range - Black for $5.79 (list price $27.99)

Executive Office Solutions Portable Adjustable Aluminum Laptop Desk/Stand/Table Vented w/CPU Fans Mouse Pad Side Mount-Notebook-Macbook-Light Weight Ergonomic TV Bed Lap Tray Stand Up/Sitting-Black for $39.99 (list price $89.99)

iClever BoostStrip IC-BS02 Smart Power Strip | USB Charger with 4 USB + 3 AC OutLets for $17.99 (list price $36.99)

TOOLS

3M 39008 Headlight Lens Restoration System for $15.99 (list price $29.99)

SHINE HAI Candelabra LED Filament Bulbs Dimmable 40W Equivalent, 5000K Daylight White Chandelier B11 LED Bulb E12 Base Decorative Candle Light Bulb, ETL Listed (Pack of 6) for $15.99 (list price $37.99)

TP-Link Smart Plug, No Hub Required, Wi-Fi, Control your Devices from Anywhere, Works w/ Amazon Alexa (HS100) for $29.95 (list price $39.99)

Homax 80099 No-Sag EasyGate Bracket Kit for $29.97 (list price $34.99)

Stanley 014725 25-Removable Compartment Professional Organizer for $11.42 (list price $12.97)

HotelSpa 11 Inch Solid Brass Height/Angle Adjustable Extension Arm for Perfect Height, Angle and Easy Reach of Any Showerhead for $14.99 (list price $24.99)

Loctite Liquid Professional Super Glue 20-Gram Bottle (1365882) for $5.97 (list price $7.99)

Nite Ize Original Gear Tie Reusable , 3-Inch Rubber Twist Tie, Black, 4-pack for $2.98 (list price $4.34)

X-bet MAGNET - Ceramic Industrial Magnets - 18 mm (.709 inch) Round Disc - Ferrite Magnets Bulk for Crafts, Science & hobbies - 100pcs / box! for $17.87 (list price $44.99)

Stanley 84-079 6-Piece Bi-Material Mini Plier Set for $12.99 (list price $25.80)

Presa Premium Paint Brushes Set, 5 Piece for $9.99 (list price $14.99)

Duck Brand 394468 All-Purpose Duct Tape, 1.88 Inches by 45 Yards, Silver, Single Roll for $6.49 (list price $9.60)

Glisten DM06T Dishwasher Magic Cleaner 2 Pack-Two 12 Ounce Bottles-EPA Registered Cleanser Eliminates 99.9% of E-coli and Salmonella for $6.97 (list price $11.99)

Jumper Cables 4 Gauge, Extra Long (20 Feet) High Capacity (400 AMP) Tough Insulation, with Heavy Duty Alligator Clamps - High Performance Battery Booster Cable w/ Bag & Emergency Tool Window Breaker for $25.99 (list price $39.68)

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iStock // Ekaterina Minaeva
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Man Buys Two Metric Tons of LEGO Bricks; Sorts Them Via Machine Learning
May 21, 2017
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iStock // Ekaterina Minaeva

Jacques Mattheij made a small, but awesome, mistake. He went on eBay one evening and bid on a bunch of bulk LEGO brick auctions, then went to sleep. Upon waking, he discovered that he was the high bidder on many, and was now the proud owner of two tons of LEGO bricks. (This is about 4400 pounds.) He wrote, "[L]esson 1: if you win almost all bids you are bidding too high."

Mattheij had noticed that bulk, unsorted bricks sell for something like €10/kilogram, whereas sets are roughly €40/kg and rare parts go for up to €100/kg. Much of the value of the bricks is in their sorting. If he could reduce the entropy of these bins of unsorted bricks, he could make a tidy profit. While many people do this work by hand, the problem is enormous—just the kind of challenge for a computer. Mattheij writes:

There are 38000+ shapes and there are 100+ possible shades of color (you can roughly tell how old someone is by asking them what lego colors they remember from their youth).

In the following months, Mattheij built a proof-of-concept sorting system using, of course, LEGO. He broke the problem down into a series of sub-problems (including "feeding LEGO reliably from a hopper is surprisingly hard," one of those facts of nature that will stymie even the best system design). After tinkering with the prototype at length, he expanded the system to a surprisingly complex system of conveyer belts (powered by a home treadmill), various pieces of cabinetry, and "copious quantities of crazy glue."

Here's a video showing the current system running at low speed:

The key part of the system was running the bricks past a camera paired with a computer running a neural net-based image classifier. That allows the computer (when sufficiently trained on brick images) to recognize bricks and thus categorize them by color, shape, or other parameters. Remember that as bricks pass by, they can be in any orientation, can be dirty, can even be stuck to other pieces. So having a flexible software system is key to recognizing—in a fraction of a second—what a given brick is, in order to sort it out. When a match is found, a jet of compressed air pops the piece off the conveyer belt and into a waiting bin.

After much experimentation, Mattheij rewrote the software (several times in fact) to accomplish a variety of basic tasks. At its core, the system takes images from a webcam and feeds them to a neural network to do the classification. Of course, the neural net needs to be "trained" by showing it lots of images, and telling it what those images represent. Mattheij's breakthrough was allowing the machine to effectively train itself, with guidance: Running pieces through allows the system to take its own photos, make a guess, and build on that guess. As long as Mattheij corrects the incorrect guesses, he ends up with a decent (and self-reinforcing) corpus of training data. As the machine continues running, it can rack up more training, allowing it to recognize a broad variety of pieces on the fly.

Here's another video, focusing on how the pieces move on conveyer belts (running at slow speed so puny humans can follow). You can also see the air jets in action:

In an email interview, Mattheij told Mental Floss that the system currently sorts LEGO bricks into more than 50 categories. It can also be run in a color-sorting mode to bin the parts across 12 color groups. (Thus at present you'd likely do a two-pass sort on the bricks: once for shape, then a separate pass for color.) He continues to refine the system, with a focus on making its recognition abilities faster. At some point down the line, he plans to make the software portion open source. You're on your own as far as building conveyer belts, bins, and so forth.

Check out Mattheij's writeup in two parts for more information. It starts with an overview of the story, followed up with a deep dive on the software. He's also tweeting about the project (among other things). And if you look around a bit, you'll find bulk LEGO brick auctions online—it's definitely a thing!

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Name the Author Based on the Character
May 23, 2017
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