Good for you! With my "regular" stored food, I've latched onto similar food so as to save costs. For example, I've stocked up this past month using off-inventory sales.
One way of eating cheap - provided that multivitamins are part of the diet - is to see cheap staples like flour, rice, ramen, and so on as "base" foods and the rest as "ingredient" materials. I'm starting to knock around with a rice cooker to see what I can do with it.
One thing I found is that you can use it for macaroni (not very well,but serviceably if you don't mind the taste of some "browned" macaroni) and you can also use a single slice of cheese on top (processed "Swiss" in my case), pop it in the microwave for 30 sec., and get home-brew mac and cheese. Not as good as the processed stuff - for one, the cheese coating is thin - but serviceable.
The same trick works for rice & cheese, although one slice doesn't provide enough "cover." This one's a work in progress. :)