First peel the crayons. Then we break and separate them into cupcake cups. You can find craft cups at Joann's as well if you like. Cupcake cups work just as well. I say the cheaper the better since they are getting thrown away after the craft.
You can microwave the crayons directly in the candy molds but I prefer to just melt mine in the oven. I set my oven for 350 degrees. Then I just check on them and occasionally mix them with a toothpick until they are completely melted. I also have an old cookie sheet that is now the craft sheet as the oil in the crayons sometimes does seep through the bottom of the cups. In my experience Crayola crayons are less oily and melt faster and better than cheap crayons. However, I would not pay full price for crayons just for this project. I usually have the kids gather their old broken crayons. Crayola 24 count boxes were on sale this week for 25 cents each limit 4 so I bought 4 and Riley bought 4. This time I used two boxes.
When the crayons are completely melted carefully pour the wax into your mold of choice. I buy candy molds at Joann's. They are fairly inexpensive and can be reused. Again these are now only used for crafts. One thing I did that I would not do again is purchase candy molds that have a slot for a popsicle stick. If you happen to pour just a little bit too high the wax flows into this slot and then will pour all over your counter as it did to me today. I should have taken a picture but I was too busy trying to clean up the mess quickly. Then I realized I should have left it alone and just scraped off hard wax instead of smooshing it into my counter. Not my smartest moment. The molds shown here are regular candy molds
After I pour the wax I put the molds into the freezer for about 10 minutes then set them on the counter for a few minutes and then pop them out and they are ready to go!