When you say no food, do you mean literally nothing, or like only a few small things here and there. Because if you have anything around you can look up what you can make with it.

If you mean literally no food, go to a mall or something and take free samples from food courts

I’ve also seen a trick where you put paper towels up the change return of vending machines so it doesn’t drop. People think their change got eaten by the machine, but you go at night and collect your earnings