***Adult Supervision Required***
One thing I have always loved doing with kids, whether my own or when I was teaching preschool, was to make what I called Muffin Tin Crayons.
The fun part about these is every child can make their own color combination. The great part (for parents) is that you can use up all your broken crayons so they aren't laying around anymore.
First you need to get your muffin pan and put a liner in each spot. You can do it without the liners but, they make clean up so much easier.
Preheat your oven to 200 degrees. It doesn't have to be super hot, just hot enough to melt the crayons.
While you are taking care of the muffin pan and oven have your kids find the crayons they want to use. (If you haven't done this already) Once they have their crayons, have them peal the labels off so that there will be no paper in the crayon once it's made. Next comes the part that kids like most. If needed....break the crayons to fit in the tin. Any size will work and they don't have to be the same size. They just need to fit.
Now comes the part that only an adult an do. Put the muffin pan in the oven. Keep an eye on your pan to see when they are melted. I don't have a time on this since the amount of crayons and the size of each piece will differ and dictate how long it takes.
Pull the crayons out when the are melted completely. LET THEM COOL!!!!! Don't remove them from the pan until they are completely cool. Hot wax hurts!!!