Recycling crayons into new ones is one of the most frequently submitted activities I receive. The first time I learned about it was 20 years ago in Mary Ann Kohl's book, Scribble Art. She named them Scribble Cookies and you can get the directions here. Be sure to click around her site for lots more free art activities too!
Anyway, it's fun to see the different variations on this wonderful idea such as Let's Explore's alphabet crayons. These are perfect as gifts, party treats and even stocking stuffers :)