Are they communal cups? At my office, everyone has their own cup. Perhaps as a happy side effect, there are automatically zero mugs lying around anywhere, becau

Are they communal cups? At my office, everyone has their own cup. Perhaps as a happy side effect, there are automatically zero mugs lying around anywhere, because if you leave your mug somewhere then what are you going to put your coffee in? Additionally since most people have a unique cup, other people will recognize yours and try to return it if you misplaced it.