Here's some of my ideas. Last year I only had a hot pot (a kind of kettle that you can make soup etc in) and you can do a ton with it. Makes soups, beans, hard boiled eggs, pasta, etc. Because meat is expensive and difficult to cook with your set up you need to be thinking about alternate sources of protein, like eggs/beans/lentils... See where I'm going with this?
I find salads easy and quick to put together and its so easy to toss in whatever food group you're short on that day. Short on protein? Toss in a hard boiled egg. Obviously veggies, but you can do a fruit salad too. Simple and cheap dressing is oil and vinegar. Chuck some seeds/nuts in for taste and nutritional value. You can easily make a meal out of a salad.
If you can get your hands on a toaster oven, a whole new realm of possibilities opens up. Put some cheese, onions, tomatoes, oil and greek spice on a bun and toast it. Google toaster oven recipes.
This isn't an option for you because you don't have an oven, but I make my own bread so I always have something around. If anyone is curious google Jim Lahey's No Knead Bread. Easiest recipe in the world, very minimal work and makes the best bread I've ever had. Hope this sparks some ideas.