stews, curries and soups are good.
in fact you can get lots of different kinds of soups in tins or cartons - they microwave well, add grated cheese or chopped up ham, or eat with crackers.
precook ingredients for lasagna, assemble and freeze. will not be as nice reheated in micro as it would be in oven, but it will do.
same with pies
precook sausages and meat balls, chop before freezing. then reheat and mix with rice or pasta and veg like peas, sweetcorn or green beans and some sauce
use tin tuna - no need to heat! - and mix with mayo, teaspoon of mustard, grated cheese, grated cucumbers and sweetcorn and serve in toasted pitta.
you can also buy precooked meat like chicken or ham - easy to reheat.
you could always ask your friends to help out by bringing you dinner or just invite you over at weekends - you could the return the favour by having them over after your new kitchen is done!
and don't forget takeaways - chinese, pizza, fish & chips, curry are always easy!