It has always seemed like the oppressively hot Texas summers ought to be good for something or other, and now I've found it- I can use the 100+ degree days to melt down old crayon pieces into fun multicolored crayons. I found the idea on Mama Smiles a while back, and tried it last week (because it's definitely still summer here).
I don't know if it is necessary or not, but I surrounded the little cups of crayons with tin foil and covered the whole thing with plastic wrap. They turned out well, and M had fun checking them every day to see how much they had melted. It took about a week for ours to melt.
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