Here is a simple and small hanging hook. I've designed the hook to use use two screws to prevent rotation and movement. I also use this same hook with double sided tape instead of screws for an effective hanging hook.
The hook is optimised for two 3.5mm countersunk screws, typically 15mm in length.
My print is made in 1.75mm eSUN PLA+ White filament, with 0.2mm layer height and 15% infill on a Bambu Lab X1 Carbon printer. No print supports required.
I hope that you can find this print useful, too.
Remember to leave me some feedback or even a tip to keep me enthused to make more of these drawings.