This may help, we use this recipe in our Kids Kamps, they enjoy making them. Tub Crayons Contributed by Kathy Yields two super-sized 6-inch crayons, each 1-inch thick Cheese grater Large bar (4.5 oz) white soap, such as Ivory, or Ivory flakes Large bowl Liquid food coloring Water Potato masher or plastic sandwich bags Molds, muffin tins, ice-cube trays, optional Grate soap into the bowl. Add 1-1.5 tablespoons of food coloring and a few drops of water to the grated soap. Using a potato masher or your hands slipped into plastic sandwich bag “gloves” blend and squish the mixture until it’s of modeling-clay consistency and the color is thoroughly incorporated. Add additional drops of water or coloring as needed. (Note: Make the mixture a few shades paler than desired the crayon will darken as it dries.) Roll mixture into fat logs, create free-form shapes or press it into molds, tins or ice cube trays. Place crayons on a cookie sheet covered with waxed paper and let dry for 2 days or until hard. If you’ve used molds, pop out crayons. (**Crayons might stain grout, so watch kids if there is tile in or around the tub. Try to rinse immediately after play.) HTH Wendy