While having some tests at the Hospital I had to wait for an hour. I went down to the coffee shop and bought a breakfast sandwich and a coffee. I picked up an extra coffee for the receptionist where I go for my test . Before I left,  I gave the coffee shop girl 50 dollars and asked her to use the money to buy coffees for the people behind me in line. So I got my coffee and now a dozen people, mostly nurses and med students also enjoyed the morning.