I donated blood this afternoon. After you are finished donating you are taken to a table where you are provided with snacks, cookies and a drink. This allows you to recuperate from the loss of blood from donating. It also is used as a time for the staff to watch and make sure that you do not faint. This bell is on the table to signal the staff if you are in need of assistance. Thought it would make an appropriate image of todays event.