Actually ... you can do a surprising amount of "cooking" without a kitchen. I've been experimenting with tools and techniques to use while camping and travelling. The most important thing is a way to boil water - either an electric kettle, drop in immersion heater, microwave, camp stove, jetboil, hot plate, campfire, whatever. And a widemouth thermos/"food jar" - get a decent one like Nissan or Thermos, the cheap plastic ones might let the heat out too quickly to finish cooking.
Now you can make rice, oatmeal, pasta, even poached eggs. And it's WAY easier than cooking on a stovetop - boil the water, pour water and rice into food jar, go off and do somthing for an hour or so - BAM, cooked rice, no need to stand over the stove and watch things so they don't burn. And, since it's in the thermos, you can throw it in a backpack and eat it later - save a ton of money on lunches.
Great combos are brown rice (the kind I get takes about an hour to cook) + lentils (take about 40 minutes, but it's OK to throw em all in at the same time, I'm lazy) + boullion cube + some dehydrated onions + various seasonings, pasta and peas or corn+cream cheese+tuna, oatmeal + dehydrated fruit+maybe an egg, all the usual. For "fast" food quinoa is the best, cooks in 15 minutes, I throw in canned black beans and maybe salsa or tomato. Pasta cooks in about 10-15 minutes too, I get a high protein whole wheat pasta. A way to heat sauces is nice but not vital - if you absolutely HAD too you could heat more water and heat things in plastic bags or in a smaller container inside the electric kettle - I've heated up those foil-pouched meals that way a few times. Campers make scrambled eggs that way too.
The stuff is light enough to take along travelling - (the smallest combo is only a little bigger than the thermos alone and fits in a big pocket) and saves me from the annoyance of having to go out to restaurants for every. damn. meal. Or being screwed because I'm someplace that stores and restaurants close early and my stomach is still in a different time zone. And I can make my own GOOD coffee instead of taking a chance getting the warm dishwater too many places serve - there are even a few small grinders that work pretty well.