I melted some crayon wax (red+purple) into a crayon my nephew can use for his art projects. His friends LOVE the new "Tank Crayons" he uses in school. I made a Fencer (fore and aft) and a SuperHeavy tank out of wax.
The melting pint of crayons is about 140° F so be careful. Apparently the latex mold is OK with these temperatures.
Soon I will be making other crayons when I get some more latex molding material!
Next I am going to make erasers...