This is a simple remix of pkobayashi's fat-hinged fidget cube. The structure hasn't been changed, I just laid the cubes out flat to make printing easier. Printing the original model always resulted in the top layer of cubes getting fused to the bottom layer. This layout eliminates that problem.

The fat hinges are quite robust, so the cube really stands up to a lot of "fidgeting" - it's quite addictive and oddly therapeutic.