These crayons will be a hit with any kids to whom you give them. Just add water!!
1 bar hypo-allergenic soap (the best is plain old Ivory, but any soap their skin can handle and is white, will be fine)
1/4 c. warm water
small moon & stars cookie cutters -or- any plastic candy mold ( you can get creative with the cookie cutters and make them any shape you want) or you can mold them by hand into crayon shapes!
For making multiple colors you'll want to get the kids and maybe even your significant other to help, as the mixture will need to be stirred until it hardens.
Grate the soap until it's finely shredded. Mix in the warm water. Separate into as many small bowl as colors you wish to make (so if you want to make 6 colors of crayons, use 6 bowls) Place a few drops of food coloring into each bowl until desired color is achieved. Stir until the mixture hardens. Remove from bowl and kneed on a flat surface until it thickens into a thick dough. Spoon dough into the mold or cookie cutter. Use your fingers to press(to get rid of air bubbles. Place mold into the freezer for about 10 minutes or fridge until 30 minutes - or until firm. Pop crayons onto a plate, let air dry overnight.