Notable appearance: Batman & Robin

The hidden ice skates in Batman’s boots may be completely obsolete 364 days a year, but on the one day that he squares off against Mr. Freeze they quickly become the difference between life and death. With just a simple tap of his feet—a la Dorothy from The Wizard of Oz—these delightfully campy skates instantly pop out of the soles of his boots and the Dark Knight is ready for whatever frozen environment Freeze has created. The best part? He installed these in his costume before he ever knew Freeze existed. Talk about being prepared.