I noticed that the crayon bin at childrens' church was full of little pieces that no one would touch, so I sorted the good ones from the crumbs. I mentioned my project to our childrens' pastor, who just happened to have a machine that melts the little pieces and makes whole crayons. The three year olds and I were peeling crayons before Sunday School, so we could have "rainbow crayons" to color with. It really is a cool machine. So far I've made pink/blue/purple and yellow/green/orange rainbow crayons. I have a quart ziplock filled with broken pieces, so there are many possible color combinations.