Printrbot Simple Metal Corner Camera Mount

This slides into the right side of the heated bed and has slot to mount a camera using a standard 1/4 UNC screw.
added one with rounded corners
added one that is offset 10mm higher
fixed Z axis orientation in STL files

I've used this to attach a Logitech C920, that camera has a standard camera/tripod screw hole underneath so it's easy to mount.
I didn't have any of these screws lying around so I printed this one:
http://www.thingiverse.com/thing:578514

Enjoy, let me know if this works for you.