Used, broken crayons no one likes to use anymore!
Metal muffin pan, or silicone muffin pan
Preheat oven to 250 degrees.
Fill muffin tin with chunks of peeled broken crayons (For our rainbow theme we mixed lots of colors together, but you can do one color per spot if you choose. They were really fun to draw with)
Put muffin pan in oven for about 8-10 minutes or until crayons are melted.
Once crayons are cooled, pop them out of your muffin pan for some fun rainbow coloring! Super easy and the kids love them.