KREQC, pronounced "creek," is Kentucky's Rotationally Emulated Quantum Computer. It's not particularly useful as a computing device, but it does provide a very visual explanation of how quantum computing works. It was created for our group's research exhibit at the IEEE/ACM SC18 conference. Here's a video showing it in action.

See our Instructable for details on how it works and how to build it.

You might also like our qubit spinner keychain, which was also made for our SC18 research exhibit.