Unify G4—Instant cameras don't seem to point down far enough, so I made this to work with any angle. If you want any other angles, let me know. 22.5 degrees seemed to be a good balance.
Just mount to the wall with a single wood screw, then use the included screws to attach the mount to the wedge. Note, these screws will go through the wedge and into the wall just far enough to prevent the wedge from twisting at all.
Feedback is welcome. Let me know if you notice any changes that need to be made.