Now Something about Food (by Ben)
Let's start with rice being that it's the king of cheap. I personally can't get enough rice. And I've been eating it about 19 years for the majority of my meals. Why am I not sick of it you ask? Well let's take a look at the Japanese and how they do it. Here in America we use meat, fish, eggs, veggies and other things of the sort for the bulk of our meals, which in turn jacks up the cost of said meal. Although eggs are a fairly inexpensive source of protein.
In Asian countries (and most of the world actually) rice is used as the bulk of the meal. Meat and other things are more to flavor the rice so to say.
Now about Sushi. Contrary to popular opinion, sushi is fairly cheap to make. A California roll (avocado,cucumber, mock crab meat) which would normally cost between $6 to $7 a roll at a sushi bar costs under $1 to make yourself. Another cheap dish is a hand full of veggies with some soy sauce and you've got a healthy tasty meal on the cheap. With the small amount of condiments needed to flavor your rice you shouldn't have to ever pay more than $2 for a filling delicious meal. I'll post some cheap rice recipes for the road later(or make my mom do it). Oh and did I mention you can cook it on the hobo stove?
From "the mother"
Sweet Eggs on Rice
My Japanese version of this is a bit more involved with how you fold and cook the egg but here goes fast and easy and with recognizable ingredients:
1/2 cup chicken or veggie stock
1/4 teaspoon soy sauce (or more to taste)
2 teaspoons of a cooking wine, Japanese mirin or forget that part
1 teaspoon sugar (or more to taste)
oil for pan
Mix all of this together with a fork or whisk and pour into medium heated pan with oil. Either let it set and flip it or scramble it. If you flip it you can take it out of the pan and cut it in strips to put on the rice.