Finally, when serving coffee at a concession stand consider carrying a small line of sweet treats such as biscotti or muffins. These can be purchases at wholesale clubs in prepackage resale sizes or at coffee websites that specialize in coffee and coffee supplies. Many coffee drinkers enjoy a sweet treat with their coffee.A few simple steps that result in excellent coffee with sweet goodies to accompany it can go a long way in making a concession stand more than an occasion source of money. Concession stands in cities can become a full time source of income.