The black hole from Interstellar is the product of millions spent on movie magic, but maybe it didn't have to be. DIY effects extraordinaire Joey Shanks of Shanks FX made a pretty good poor-man's version with just some sparkers and Photoshop. Spoilers, sort of.
The step-by-step process of shooting all the different layers by rigging up some pretty sophisticated shots of light and fire is a little involved, but the end result is actually pretty damn close to the real thing. So if you've ever wondered if you could create a black hole in your garage, this is proof that you can. Kind of.