Gimmicked this up today...idea was to do a greeble effect that was totally proceedural. Has a couple Shader Ops functions but otherwise is Carrara 4 native. I've learned a bit, and I could make the stuff have more organization and more machine-like patterns now...but I had to start rebooting Carrara as the tree grew to monumental length (an efficient shader programmer I'm not!)

The rest is Anything Grooves and plane primitives.