Crayons do not last long. Kids love them, but they break easily and their bits and pieces end up collecting dust in kids’ drawers and under the bed. Since they are made of wax, the broken bits can be easily melted in your convection oven, and re-made in any shape or size you like. Make appropriate forms out of sturdy aluminum foils and fill them with broken bits. Few minutes in your convection oven on 250 degrees and they will melt and fuse. Once cooled, let kids play with them until they are again in bits and pieces, and then start all over.