Hello Guys,
That’s my light object for the challenge.
So, these are the lamp states: OFF (using scene lamp and 30% AO from backdrop) and ON ()
This small area render is lit by one camera and the AO from my backdrop (30%) and another lamp object.
Here there is no AO and Light from my bulb emissive material
( Sorry, preview above were finished with 128 samples only 
)
So, the full assembly and the rendered scene @1500 samples is this:
(Disclaimer: some parts still not fully modeled
I hope you enjoy,
C/C are welcome.