The end of the holiday season is near, which means (in an ideal world) all of your gifts have been purchased, wrapped, and are ready to tear open. If one of the last bullets on your to-do list is disposing of the empty boxes from your online shopping haul, you should reconsider taking them to the curb. Amazon offers customers an ingenious way to reuse their boxes while giving back to the community at the same time.

Through Amazon’s Give Back Box platform, an old box can be used to ship donations to Goodwill for free. To take advantage of the program simply empty a used Amazon box, refill it with clothing, shoes, appliances, or any other items you wish to donate, and slap a customized shipping label on the front. Donors can print out a sticker addressed to their local Goodwill by entering their zip code at GiveBackBox.com. From there, UPS or the United States Postal Service will take care of the rest—free of charge.

Amazon also gives you the option of receiving a tax deduction via email, which is something worth considering as the year comes to an end. Here are some more charitable gift ideas that can be used to spread the cheer around this holiday season.