What really makes “brain freeze”. 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). But ice skulls aren’t the only thing you can make with your Skull Ice Molds. You can make chocolates or little cakes or even soap! Skull Ice Molds – puts the “eeeeew” back in cool (as in, they’ll keep your drinks cool). Dishwasher, freezer, oven, and microwave safe.