If you’re looking for a nice easy eco-friendly craft project that helps reduce broken crayons why not make a heart crayon for your nearest and dearest. You can make these in the microwave or the oven.
2) Peel all of the paper labels off of your broken crayons and separate them by shades of color – keeping oranges and yellows together, blues and greens together, and pinks and reds together. If you mix them all, it will turn out to be a yucky color!
3) Spray your molds, muffin tins, etc. with cooking spray.
5) Once your crayons have melted, take them out of the oven carefully, and then take a toothpick and swirl the wax around. Let them cool for a long time.
Microwave: If you’re using candy molds or ice cube trays, which cannot go in the oven, then microwave the crayon pieces in microwave safe cups or bowls (separate the color shades into different cups) for about 4-6 minutes. Then pour the melted crayons into your candy molds or ice cube trays and wait for them to cool and harden. Be careful — once melted, the wax is very hot!
Thanks to petite planet for the original post.