This is a simple clip-on camera mount for HP HD-3100 web cam. Also, it can be used for different cameras. I will add a model of custom mounting plate, when I have some more time.

This part is compatible with this Y belt tensioner model -
https://www.thingiverse.com/thing:2377413

Hardware list -

1pc M4x25 bolt and nut
1pc M4x30 bolt and nut