Okay, perhaps the title here is a bit of an exaggeration, but this black hole lamp made by [Will Donaldson] is an interesting approach to creating a black hole simulation without destroying the earth. This lamp uses a ring of LEDs surrounding a piece of black Lycra. A motor in the lamp base pulls the Lycra, representing the distorting effect that a singularity has on space-time. It also demonstrates how black holes can (in theory) evaporate by emitting radiation, a phenomenon called Hawking radiation. It’s a simple, but effective approach that physicists have used to demonstrate gravity for some time, using stretch fabric to simulate space-time and show how gravity warps it. It’s a two-dimensional version of a three (or more) dimensional phenomenon, but it works. And, hopefully, it won’t swallow the planet and destroy us all like the real thing might.
It’s a bit bare-bones at the moment: although the copper pipes give it a certain steampunk feel, I would probably consider covering the mechanism with black material to focus more on the simulation itself. [Will] gives you the full details on how he built it (including parts, code and all) in the Instructable so it might be a good place to start if you are looking for a way to get your brain around the wild and wacky world of singularities.