In an office used by more than one person, everyone uses office equipment, and items disappear without control.
The organizer shows exactly to where each item should be returned. When something is missing it is clearly noticed, as the outline of the missing item is shown and thus indicates that it had not been returned.
It stands upright and available for everyone to use, but on the other hand it delivers a message - return the equipment to its place. The organizer is bare without the objects it should hold.