Family Tested & Approved
silicone candy or cooking mold
Peel crayons and break them into small pieces.
Fill the cavities of the silicone mold with crayon pieces. Place the mold on a foil-lined baking sheet.
Melt the crayons in a 180 degree oven - about 15 minutes for a small mold, longer for a larger one. (Mine actually took about 45 minutes)
Remove the mold from the oven, and let the crayons cool before popping them out. To speed up cooling time, place the mold in the fridge for 15-20 minutes.