STATUS icon FOR YOUR office

[Furan] desired a way to let people know his status at the office. maybe he didn’t want to be bothered, or wished to let them know he was on break. His service is to set up an OLED display outside his office to display his status.  He’s using a 4d systems OLED display.  He has a windows application that updates the status, with plans of making it synchronize with his  messenger status. Its a fairly amazing idea, but just viewing the video, we have no idea what some of the icons are expected to mean. We would possibly choose something a bit much more apparent and generic, like text specifying our status. What would you use?