Abby Normal's Brain

The original prop from Young Frankenstien, the rubber brain is stored in a glass jar in a clear fluid. If the brain is held, it will cause the user's brain to devolve until it cannot function, killing the user.

Origin
Young Frankenstein is a 1974 American comedy film directed by Mel Brooks and starring Gene Wilder as the title character, a descendant of the infamous Dr. Victor Frankenstein. The supporting cast includes Teri Garr, Cloris Leachman, Marty Feldman, Peter Boyle, Madeline Kahn, Kenneth Mars, Richard Haydn and Gene Hackman. The screenplay was written by Wilder and Brooks.

The film is an affectionate parody of the classical horror film genre, in particular the various film adaptations of Mary Shelley's novel Frankenstein produced by Universal in the 1930s. Most of the lab equipment used as props were created by Kenneth Strickfaden for the 1931 film Frankenstein. To further reflect the atmosphere of the earlier films, Brooks shot the picture entirely in black-and-white, a rarity in the 1970s, and employed 1930s-style opening credits and scene transitions such as iris outs, wipes, and fades to black. The film also features a notable period score by Brooks' longtime composer John Morris.