I'm guilty of letting them pick their own cages.
Some like to watch out the door of their room, while others would rather be away from the view.
I've moved them from one cage to another, only to find a pouting chin. I'll spend hours bumping them around until all are happy.
I keep their brita water chilled for them too, put a little bar fridge in down stairs.
I even have a few that love a "banky" in their house, so I keep fleece laundered for them. Until it get warm and they start trowing them out. LOL
The list goes on and on..........
Good topic Null.
I can't wait to read how far others have gone to make their chins comfy.