Speaking as an ER RN-NP, nurse practitioners, I'd say gift cards to Starbucks. Hospital coffee is atrocious, possibly as bad as the coffee I drank for 20yrs in the Navy as a Corpsman. Now, my wife is an MD and she raves about hospital coffee, which is usually made by mixing coffee syrup with hot water. Then again, after sampling her cooking, I understand why she loves hospital coffee and I do the cooking. The above was correct, if a shift staffer fails to show up, it falls on the outgoing staff to decide who stays. Working the ER is quite trying, dealing with death and misery, seeing how others treat others is tough.