Gather broken crayons (or new crayons) you have around your house.

Find a muffin tin or silicone trays that you do not eat from.

Brainstorm how you want to create each new crayon. Will you blend the colors? Keep each crayon within the same color family? Perhaps you may make a homemade primary-colored crayon? Get creative! Coming up with your colors is the best part.

Peel off the backing of the crayons.

Place the different pieces of crayons into the tray.

Preheat the oven or toaster oven to 300 degrees. I wait on this step because peeling and sorting the crayons took us a few days to complete. We worked in small amounts of time.

Place the muffin tin into the oven for 12-15 minutes, watching the crayons melt.

Remove the silicone molds. The melted wax will still be hot!

Put the tray on a rack or baking sheet to cool.

Once the crayon wax has cooled, your rainbow crayons will pop out and are ready to be used!