How can you identify an Airbus and or Boeing from the inside based on features of the interior? I already asked a very similar question, but the answer wasn't was I was expecting. Hence this time I am more specific. 

How can you recognize a plane from the inside, when you are already sitting as passenger? 

In particular, is there a way to understand if you are inside a Boeing or an Airbus based on interior features of the aircraft? 

The question is specifically related to the differences in interior features between aircraft built by the two companies. I am not looking for answers such as "check on your ticket", "ask the flight attendant" or "read the evacuation pamphlet".
You can't, unfortunately, airlines (of same type) choose different seat manufacturers, etc.

It's like asking how to identify a building's architecture from one room.

We can discuss wing shapes, or a tail camera's feed on the IFE if there's one, but what if you're stuck on the middle seat of the middle column on a wide-body without a tail camera and no wing view?