Roombox 5

The door that is slightly open (beside the tall bookcase) is the door to my office. The open door on the back wall leads to the hallway and you can see the closed door to another office across the hall.

The working clock on the table (a replica of a real-life clock my boss' father made for him) has a hinged door on the back so you can change the battery in the clock. I used a piece of Tyvek envelope for the hinge.