Crockpot Crayons
The somewhat melted crayons. This experiment is best done when the crayons are one step away from the trashcan. When you melt the generic crayons, the filler wax floats to the top and you get a frosting effect. It wasn't enough of a hinderence to prevent the kids from playing with them. But they are kind of crumbly, and will probably find their way to the trashcan when the kids are gone next week. ("I don't know what happened to your crayons....") It was a fun experiment that cleaned out the art box and gave them something to do while I was making lunches.