There's already a mess of infinity cubes out there but I needed an excuse to mess about with print in place hinges and bridging. Hence my humble offering.
I totally borrowed the design from mjdargen over on instructables. The tutorial is pretty easy, though I didn't follow it too closely. I think a tinkercad version would be pretty easy too as the shapes aren't complex.
For added excitement, I took out the insides because I liked the structure that resulted. Caution: When I sliced this model with PrusaSlicer half of the bridges were done in the wrong direction and a little messy as a result. SuperSlicer doesn't have this problem.
** Heads up: ** You need to add supports for the upper floating hinges (on the top surface).
I've included both the Fusion360 file and a STEP version in case you want to modify things.
All are designed with a 0.2mm layer height for clearance. If you want to change this, you have to modify the clearance parameter in the CAD file.