Yeah, I recall seome real creative tamen efforts myself from a trip I took a few years ago on zero budget. After a daily oatmeal brekky and McDonald's dollar burger for lunch, the nightly ramen meal is practically health food. Luxury with a hotpot to boil water-- which BTW can act like a double boiler using an empty, upside-down tuna can in the base you can set an open can of hash or stew (for example) in the hotpot and the can's contents are nicely heated without dirtying the boiling pot.

~Susan