This might be a borring suggestion, but how about staying at somebody’s house, and each person pitch in with some food item and also each bring beverage of some kind. Find a place where you have coupons for that goes for the total bill. Lots of restaurants offers sample appetizers, that 2-3 person could split, and if you then have a coupon for the total bill at the same time.
Also some bars at restaurants has happy hour. So maybe combine the appetizer with the coupon and the happy hour, I guess that would make it inexpensive.