Last year, the friendly folks at my favorite Starbucks invited me to hang some of my photography on their "art wall" for a month.
When considering which images to display, I thought it would be fun to photograph members of the staff - so that it was their portraits on the wall.
Scheduling issues prevented some people from participating, but in the end eight staff members were able to take part. Six separate photo shoots were arranged and everyone was a fabulous sport.
(Unlike traditional art galleries, Starbucks provides display space only. Promotion, sales, etc. are left to the artist. So if one sells a piece through Starbucks, one keeps the entire fee - rather than splitting it 50/50 with the gallery.)