A recent project I did for studio-eposh, not so much just about rendering but also to show what can be done with vanilla Rhino.
Rhino-model with all geometry used for the build:
Neon render in vanilla Rhino:
Cycles render (V6 WIP):
The real deal: 3D printed and dyed:
NOTE: All 3D printed products by studio-eposh are modeled in Rhino