Want to piss off your neighbors? Why not build a portal to hell in your living room?

This guy has built what he calls a “High Voltage Pendulum Arc” in his apartment. Seeing that name, you might wonder what this thing does, or if it has any practical purpose. To answer those questions in order: 1) it shoots out bolts of electricity, and 2) no.

Although you might not be able to do anything meaningful with it besides scare your roommates, it still looks pretty cool. Plus, I’d imagine that having it around would manage to solve any bug problem you might have.