Simone Giertz's inventions aren't particularly useful, but they're brilliant—and hilarious—all the same. For the uninitiated, the Swedish robotics enthusiast is nicknamed the "Queen of Sh*tty Robots," since she constructs automated devices that perform mundane (or simply pointless) tasks and demonstrates them on YouTube. Giertz's bizarre creations include a tooth-brushing helmet, a hair-washing robot, a popcorn-feeding machine, and even an alarm clock that wakes up self-hating sleepers with a slap in the face.

In WIRED's video below, you can tour Giertz's San Francisco lab, where she builds and tests her purposely mediocre machines.

[h/t Wired]