Color rocks with crayons. Place the rocks on a foil lined cookie sheet and bake them for 15 minutes at 200 degrees to melt the colors. Let them cool and then have the children grab an old sock, turn it inside out and let them rub the rock to polish it up and make it shine.
Edible cookie tray, made from pepperment candies, arrange candies on a tray, with parchment paper, about 1/4 inch apart. Put in oven preheated to 350 degrees. Bake for 7-8 minutes, remove and cool. Use as tray and when done, break up and eat as candy!