These are a few random abstract renders, each done in a relatively short period of time (1-2 days) as my way of getting back to Blender after a few months hiatus.
Nexus
Colossal Drops
Creeptown
Tesla Farm
Attachments
This is amazing!
Very cool. I love the style. Materials/shading is superb.
Thank you. 
Here are some quick clay renders:
Added a new render. Tesla Farm:
Clay:
This is amazing. Congrats!
Good job overall. The abundance of detail in otherwise simple concepts really bring these out (it also helps that the shading and tonemapping is of a high quality as well).
These are fantastic. I’d have Colossal Drops as my desktop background if only it was rendered at 3440x1440. 
Thank you all.
Here is Colossal Drops rendered in 4k (with slightly different compositing):
I didn’t expect you to do that! Thank you though. desktop background changed.
This are very nice and cleverly made renders.
Cool