Muffin tin, tin foil, non-stick cooking spray, old, broken crayon pieces.
This is a fun craft you can do with your leftover broken crayons. Preheat oven to 300 degrees. Get a muffin tin and line it with foil, spray foil lightly with non-stick spray. Then, take your old, broken crayon pieces (use pieces smaller than 1/2 inch) and put them in the tins. Put in oven and check periodically until fully melted. Take tin out and allow to cool. Once the crayon rounds are cool, you can take them out and give them a try. These also make great party favors!