At my college, on every weekday from 11 to 1 the local Hare Krishna group sets up a lunch serving table in a common area on the campus. It's all-you-can-eat, and is $3. They serve vegetarian organic lunches. I like to eat their lunch sometimes. It's a good deal for me since I can eat so much!
Yes, these are the guys you see at airports wearing robes and chanting Hareeee Hare Krishna Krishna.
I like that at their lunch they don't actively try to recruit anyone. They just serve food and some other sit in a circle playing music.