Vesa Screen Mount

A couple standard Vesa mounts both compatible with 75mm (generally 24" and under) and 100mm (over 24") screens.
One mount is straight and the other one is angled 4 degrees (direction depending on how you mount it).
They both have a single hole for a bolt, acting as a pivot and allowing for tilt adjustment.

I printed both in PLA at 50% infill to be safe and they're extremely solid, more than enough for my cheap, light 24" screen. Still, I would advise to test it yourself before mounting a heavy/expensive screen.
You'll see in the pictures that the angled one has "cracks", that's because I tried printing with a 1mm nozzle for the first time and I didn't get the settings right just yet. Even with those gaps, the mount is still rock solid.