Electronium Hat

The Electronium Hat harnesses the power of sunspots to produce cognitive radiation. This radiation provides the wearer of the hat with an increased mental capacity and also provides higher-level functions such as speech. Guenter is the only known wearer of the hat. When operating at full capacity, the hat makes the wearer a genius by human standards. However, when working at half capacity, it only provides sufficient skills for something inferior, like attending a business school.

Quotes

 * Guenter: When I had that (hat) there was too much pressure to use it. All I want out of life is to be a monkey of moderate intelligence who wears a suit. That's why I've decided to transfer to business school! Farnsworth: Noooooooooo!