Take your small crayon pieces and make new ones. You can make rainbow crayons or try to match colors. We found the prettiest are ones that have all different shades of one color. The best way is to put paper liners in muffin tins, put in the crayons and bake at 200 for about 5 minutes or until melted. Then pop into the freezer, and they will come right out of their wrappers.  You can also microwave. Put crayons in something you are willing to throw away, and melt on medium until melted. It might take quite a while. Then pour into molds or muffin tins.