I always try to get foods that will feed at least 3 people. Last fall I was able to get large cans of sweet potatoes, a large can of tuna...large can of spagetti sauce, and a box of spagetti...a big box of oatmeal is also a good filling item.
Just remember that when you pick out things, that you don't want things that call for extra ingredients...like a cake mix...it needs oil and eggs.