A simple derelict in Space. This is a single, solid item.
It doesn't do anything. It just hangs there in space - looking slightly lonely - bereft of all living things.
Stripped! Gutted! Abandoned! With a warning beacon placed on top.
You can animate the warning beacon light so that it flashes. You can hang point lights randomly inside the structure. You can brighten and make the materials more reflective. Or you can make them more dull.