Attached Link: Fast 3D low-polygon props.

But note that pointing lights at the figure is the general custom in a photographic studio. Still, it's worth using a photostudio set lit by an infinite light to give a bit of environment. Gerald Day has a good one, and other good low-polygon room sets, at the linked site.

He's produced a lot of useful stuff, and he has a good eye for getting just enough detail. Not close-up models, but you can put a bit of clutter in a scene quite easily.

You could just have a textured square-prop behind the camera, rather than a full 3D set, and texture with any appropriate photograph.