First, heat the oven to 250ºF (121ºC).
First peel the crayons. The easiest way to do this is to cut a vertical line though the paper with a knife but be careful not to cut the crayon.
Then, break the crayons in small pieces. The best way to do this is with your hands.
When you are finished, put the crayons into the holes. You can put them however you want. You can also use different shaped tins if you have them. You can also add some glitter to the crayons.
Then, put the crayons into the oven for around 12 minutes or until they look melted.
Then, quickly swirl designs with a toothpick to each of the melted crayons. It is better if you use a different toothpick for each hole. Then, let the crayons to cool for 12-15 minutes.
When the crayons are cool, turn the tin upside down on top of a towel and softly hit the tin. You can use your hands or a rubber mallet to force them out.
You should end with beautiful tie-dye crayons. Don´t worry if some crayons break, they can still work.