This is one of my favorites, and I enjoy it in several ways. Sometimes I pay for the driver behind me, sometimes I purchase a gift card and give it away to someone who "needs it", sometimes I invite a friend to coffee and pay the entire bill. Coffee cards make awesome gifts anytime, for any occasion or "second Tuesday"! I always feel so happy to have done it, and the warm feeling stays with me a long time. But the thing that always gets me is the reaction of the barista, the surprise and delight to be part of the treat -- the ripple effect is awesome!