Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:2760919.
UPDATE 02/15/18 I just uploaded a bi-directional version of this so the camera can be mounted on either side. This goes along with my rotating arm remix you can find here: https://www.thingiverse.com/thing:2795575
For some reason my Logitech c310 isn't working properly so I wanted to mount the only other web camera I had in the house, a Microsoft Lifecam. There wasn't an adapter for this so I made one.
This print requires that you take off the flexible mount bracket (3 tiny screws underneath) and then put the plate and screws back together. Camera should fit right into the hole (20mm) and the cord will fit into the slot keeping things sturdy. There's a screw hole provided on the bottom should you want to get serious and really secure it. I didn't end up using it as it's sturdy enough for me and I didn't want to pre-drill a new hole in the camera's base plate.
Sample print shot with Microsoft Lifecam through Octoprint z-layer timelapse. https://youtu.be/NAzEJMqsK0w
Hope someone finds it useful and let me know if there's any questions,
-b