This is a small dongle that lets me adjust the lens screw on the Raspberry Pi camera module v2. It's so small, I didn't even know the lens was adjustable until I read about it online. This tool seats into the lens face and allows users to spin it with some degree of precision.

Creality

Ender 3

No

No

.12

I printed this at high resolution because it depends on very small projections to interface with the lens. With a brim at .12 in PLA, the predicted print time is only 17 minutes. I suggest a brim because it is a very small part and has minimal contact with the print bed.