Levent Konuk / Shutterstock.com Legos Put in Garbage Cart See Alternatives Levent Konuk / Shutterstock.com Wash Before You Donate It’s a good practice to wash Legos before you donate or sell them. Soak Legos in warm water with some detergent and then air dry. Alternative Ways to Recycle Donate Used Legos to Brick Recycler Send unwanted Legos to Brick Recycler, which gives them to children in need who are in orphanages in Zimbabwe. They’ll even pay for the shipping. Find out more. Ways to Reduce CTR Photos / Shutterstock.com Buy Used Legos Legos are made from plastic #7 and so are incredibly difficult to recycle. So the best way to prevent Legos from sitting in a landfill is to buy used ones. This approach keeps the Legos already out there in circulation. Ways to Reuse Sell Legos on BrickLink You can sell Legos on BrickLink, which calls itself the “unofficial Lego marketplace.” Did You Know? Lego to Spend $1B on Going Green The World’s Most Popular Toy According to a 2010 survey by Firebox.com and Toyology.com, Legos are the most popular toy ever manufactured.