A simple cube with four IES point lights at the ceiling, side wall material with 0.9 diffuse and 0,85 reflection value and a wireframe node for accentuated edges.
Filmic tone mapping with gamma 2.2, color correction in post.
View attachment 32333
Great idea to have a challenge for the new features, but sadly all the archviz people who were formerly active seem to be gone
That sounds promising, but the weighting of starlight against lamplight in one image could turn out to be quite a challenge of its own!
Oh I see, never watched that movie though.
The mirror box is an old idea of mine I sometimes use just for fun renderings.