This is a little fidget toy I made for myself to keep my hands busy when my mind is occupied. It is just what it looks like, a simple print-in-place hinge. I ended up with one of these when I was messing around with designing a hinge, and I ended up liking it so much I decided to share it.

If you'd like it modified (bigger, longer, shorter, etc) you can use the Thingiverse Customizer (https://www.thingiverse.com/thing:6060319) or the OpenSCAD file to tweak some parameters.

Note: For my printer printing at 0.3mm, the tolerance is just right where the hinge sticks a bit at first but loosens up nicely after a while. If the hinge prints loose or fused into 1, use the Customizer to change the "air gap" between the parts.