Clips I designed to hold 1/2" thick picture frames (https://www.amazon.com/dp/B0CNKQF119). The scad file is parametric with picture frame and hardware measurements at the top, so you should be able to easily modify it for any frame you have.

Designed to have two mirrored clips holding the bottom of the frame in a way that allows the frame to easily slide in and out.

I designed these because my work requires me to display licenses by whatever work station I am actively using, and I work at different stations on different days, so swapping out the displayed license easily was important.

Prusa

I3 MK3S

No

No

0.15mm

15%

The 3D model produced is a left-clip; I used my slicer to mirror the clip model to produce a right clip.

I printed three pairs on my print bed at once.