Do you have a regular stove-top and oven. If you don't I would recommend a table top grill press, and a rice cooker. You can cook hard boiled eggs in a rice cooker.

Hmm, chicken. Well there are lots of things you can make marinades out of. The main rule with marinades is to not add oil. Oil does not mix in with the fat of the meat. For marinades you want to use acidic things. Vinegar, or different citrus juices work well. You also want to add to the umami taste, by adding something, like Worcestershire, soy, or fish sauce. Some marinades have a lot of sugar that caramelizes like barbecue sauce.

It is hard to change the flavor if you just season it as you are cooking. Just go to the spice section, and try to figure out what you like. Lemon pepper chicken is pretty easy.

Thyme lemon chicken is good, you could use a white cooking wine and lemon juice to soak it in for a few hours.

You could use some tomato paste, orange juice, and molasses to make a barbecue sauce. You could let it sit in the fridge with some white vinegar and garlic.

http://www.alwaysorderdessert.com/2011/04/fiery-asian-chicken-cutlets.html

That one is pretty fancy, but would be worth finding the ingredients.

There are a hundred recipes to make anything, look at a few and pick ones that sound like you can find all the ingredients.