An ice cube tray also holds quite a bit of wax per cube when i first started i would buy wax right from a bee keeper and clean it strain it and put it in oiled ice cube trays for proportianite sizing (cutting wax is difficult) so if you find your cubes are to big you can either add more veg oil per batch if you find its too soft with more veg use coconut oil or buy a smaller mold tray they are about 10 at wallmart joanns or michles craft stores have fun you of course could use an essential oil in place of the fragrance oil and it would be theraputic but there is not a natural green apple essential oil much to the dismay of my boyfriend as well....