We used to do a lot of these in elementary - Chick-Fil-A, McDonalds, pizza, ice cream shops, etc. Also amusement places like skating, putt-putt golf, etc.
While not huge money makers, we found these to be pretty low effort and a lot of fun. Aside from whatever funds they brought in, it also served to increase school spirit and to have a time for a lot of us to get together to socialize.
You could ask practically any restaurant, independent or chain. All they could do is say "no", and they might well be interested.
Note - my neighborhood is an indepdedent suburb of about 10,000 people, sort of like a town, but without the infrastructure. (Not inside anyone's city limits.) It has a "give-back Wednesday" the 1st (pizza), 2nd (barbeque), and 3rd (Mexican food) Wednesday of each month. It's a standing arrangement with 3 local restaurants. They donate a percent of the proceeds from those specific nights. The money is split between the soccer association, the swim team, and the library. We all know it's a good cause and try to coordinate eating out to support this program. Plus the members of those groups really try to promote it. This one has been in place for about a year.
[ 03-15-2006, 08:50 AM: Message edited by: JHB ]