This print was inspired by https://www.thingiverse.com/thing:4882714
These are low-profile mounts that clip on the X gantry and the printer bed + surface. They are a friction fit. All parameters are clearly labeled in the code and can be changed to match your board.
I used this board: https://www.amazon.com/dp/B07DMZCGP9 and this makes up the “GENERIC” profile. There is also an “ADAFRUIT” profile that I based on their datasheet but it is untested. I coded that “block” for a friend and while I was doing it, he made his own print. It should be fairly close, though.
Measure your board with calipers, change the values if you need to and print it out. Both mounts are very small and print fast. I don't think a lot of precision is needed here. Your mileage may vary.
I did not have any issues with the mounts moving during the tests whatsoever. They were snug but not overly so. I made one in PLA and one in PETG.
The instructions are fairly simple and are included in the initial comments. You will need to download OpenSCAD. It's the price you pay for a free print.
Don't worry, it's a cakewalk. Go for it.
The author remixed this model.
I took a look at the original model and designed my code from scratch.