WebCam mount for the Da Vinci 1.0 (maybe others). It mounts in the same way the drip box does - tab & M3 screw. The hole isn't threaded on mine, but it's open on the backside if you loosen the side panel - use a nut.
I'm using a MS Lifecam (5000?) that I cut the flexi-monitor mount off of.
When homed, it puts the bed right at the bottom of the picture. You could cut the STL if you need/want it lower.
Looks like there's a surprise appearance by Deadpool in the background....