If you’ve got young kids than you probably have a household with a lot of broken crayons or crayon stubs. Don’t toss ‘em in the trash—most crayons are petroleum-based. Instead, you can mail them to crazycrayons.com where they’ll be recycled. Or here’s another option: microwave the stubs in a paper cup for 15 seconds. The stubs will harden into a looking multi-hued crayon. You’ll create a cool looking crayon your kids will love and also avoid contributing to a landfill.