These are great. I think I used almost all of these during college. But for the more adventurous among you, there is another trick I and my fellow "po' college kids" used to get through those hungry days. Dumpster diving and/or begging.

This can come in several forms. My favorite was just going to the back door of restaurants just after close and asking. Get someone sympathetic in the dish room and you can score some pretty awesome meals that were about to become trash. You can also go to bakeries and donut shops a few minutes before they close and ask for what they are going to get rid of. Places that make fresh baked goods each day are just about 100% guaranteed to throw those things away, and sometimes health codes prevent them from giving them to shelters. Their almost-trash can be your dinner. This could also work at the school cafeteria, if you get friendly with a worker there.

The more extreme version would include going through already-trashed food. Lots of places, though, will throw away food still in packages (i.e. loafs of bread from those bakeries) or at the very least, separated from non-food. The Dunkin Donuts near where I went to school would put all the donuts in a bag at nine pm and put them out back. At about 9:05 my friends and I would go grab that bag, and have a free few dozen donuts. Sometimes there would be an onion bagel in there, which would ruin everything, but it's a risk you take.

Lastly, I've had amazing luck panhandling for change. If you are honest and not trying for the pity dollar, you'd be surprised. I used to walk around downtown and ask people for beer money. People were generally so amused with my telling them what I was "really" going to use the money for, I frequently got upwards of $5 at a time, sometimes $50 or more from one person.

Good luck, and don't be afraid to get creative when times are tight! You're talking about keeping food in your belly here. Don't be too proud.