Scenes, the scene thread

Scenes in blender can have many uses and it would be good for people to post their thoughts and workflows regarding scenes.

The idea of this thread is to discuss and share info regarding scenes.

What have I used scenes for?
I have already posted a couple of examples on another thread (that was off topic ……LOL). Here is a link:

This is just a taste to hopefully get things going.

What do you lot use scenes for?