San Francisco City College rents our building M-Th during the school year for adult continuing education. The PTSA feeds them! From 5:30 to 8:30 each school night we roll out the coffee, muffins, Cliff Bars, and you name it and run a concession stand for the hungry students.
Not only do we make a decent profit by the end of the year, but kids learn basic retail skills (think on your feet math: one muffin $1.25, one coffee $1.25, the customer gives you a $10 .... On-the-spot diplomacy: We're out of muffins! Have you tried our cookies?)
Also, the teachers who volunteer their time each month get to meet family and students they may never otherwise get to know, in a social setting.