Skull Ice Mold Skull Ice Molds - puts the "eeeeew" back in cool (as in, they'll keep your drinks cool). Each set of Skull Ice Molds includes two two-part molds (i.e., you can make two skull ice cubes at the same time with one set). Dishwasher, freezer, oven, and microwave safe. You can also make chocolates or little cakes or even soap!