It would be fun to see a camera prop, or several variations of cameras even.
My first thought was one of those standing video cameras so it would be possible to do scenes that make it look like you're filming a porno. Silly ref image.
Some additional fun stuff for the prop:
Allow fixed PoV from its perspective, i.e. looking through the camera view.
Allow zooming in and out while in PoV for the camera.
Allow actual recording so users could create videos of their scenes.
Allow messing with the field of view, effects, black and white, etc.
Just some thoughts!