We offer digital subscriptions to mental_floss magazine through Zinio. Through Friday, they've lowered the price to a tempting $12.97! For the cost of three Starbucks Venti Tazo Chai Tea Lattes, you'll get a year's worth of mental_floss on your PC, Mac, iPad or iPhone. Probably other devices, too.
Head over to Zinio and take a look! You can preview the digital version by clicking on the magazine.