Kobayashi Fidget Cube - Flat Hinge
Another version of the fidget cube!
Maybe not quite as buttery smooth flipping around, but the hinge definitely has an interesting shape to it. Printing is actually quite interesting too. The first time you get the hinges to turn, and the internal supports pop out is quite magical!
Have fun!
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/gXnu60PrhIz