We have so many crayons, and many of them are broken. To use up the crayons, I decided to try out an experiment with Sebastian. We unwrapped the crayons and piled them by color in aluminum muffin tins. I then put them in the oven to melt. Here is what came out.
They are also a bit large to handle. If I do this again I would use a mini-muffin pan. Matt suggested making a crayon shape out of aluminum foil and filing them that way. I would have to do some experiment to get that to work.