CHOW bin
The blue garbage cans they put in the dorms for donation of non-parishable food to the needy. It doesn't actually ever contain anything edible until the last week of school, when lazy kids dump all their Ramen, Cup o Noodles, EasyMac, microwave popcorn, etc. into the bins because they don't want to take it home, but feel bad about throwing it out, which eventually leads to hippy Christmas.
The CHOW bins fed me and my buddies for like the last two weeks of school.