Shortly after graduating college I was really scraping bottom cash-wise. For about three months, I set my grocery budget at $10/week. Store brand mac & cheese was .25/box, and Bar-S hotdogs were .69/pack. I even went store brand on the ramen noodles - a 10-pack was .99.
Trying to make ramen noodles feel like an actual meal, I'd boil them, then add them to a pan with a little vegetable oil, a cup of frozen veggies, a scoop of peanut butter and a good shot of store brand hot sauce. Tasted kind of like the Thai-peanut pasta one of our restaurants here had.