Some abstract renders for a past volumetric themed contest (the topmost is the entry). Using single default cube with subsurf+wireframe+array modifier, only one type of material (volume scatter). Rendered with Cycles 256 samples, no post pro.
Here’s the scene setup (for the first image) :
The other renders are obtained from varying the viewing angle. It’s actually a random trial of setting the volumetric effect before finally got these results. Hope you enjoy it.