I used up all of my saved old and broken crayons in my first batch, so I had to go out and buy more! I put the crayons in metal cans, but I think next time (and there will be a next time) I will use baby food jars. The bottom of the cans made marks in my pan.
And of course let me know if you try this! I would love to see what molds you use! I think crazy crayons would be perfect as party favors! In fact I think I'm going to try and these for a pirate party.