Light In The Box and Museum Store sell brain-shaped molds for culinary use. Other sources of culinary brain-shaped molds include Spirit Halloween, Wal-Mart and Chocoley.
Light In The Box and Museum Store sell brain-shaped ice cube molds. Each dishwasher-safe silicone mold makes four brains. Spirit Halloween and Wal-Mart sell plastic brain-shaped gelatin molds. Wal-Mart also sells a plastic candy mold that makes three brains and three eyeballs.
Chocoley offers a plastic sheet-style chocolate mold that makes two 4-inch brains. Filling the mold requires 1 1/2 pounds of melted chocolate. This item is also safe for use with soap, concrete and plaster.