Ditto on crock pot dinners.
Stir fry is easy if you have a rice cooker (or can borrow one) and then get pre-sliced veggies from the supermarket (zucchini, peppers, broccoli, etc. plus a can of any of the following: baby corn, sliced water chestnuts, bamboo shoots. You can use cubed chicken or tofu, fry them up in a little oil (canola, peanut, with a shot of sesame), remove and then sauce the veggies, throw in a little sauce made of broth, cornstarch and soy sauce to thicken, then add the cooked meat/tofu back in to heat through. Self-serve at the stove. Kids can pick out the veggies they like/don't like.
Kids love sweet & sour meatballs: use plain beef or turkey meatballs (not seasoned) and then put in crockpot with a sauce made of half chili sauce (ketchup in a pinch) and half currant jelly (grape in a pinch). Heat the sauce a little in the microwave if you have to so the jelly is softened enough to mix. Dump sauce on top of frozen meatballs. When you get home, throw on a big pot of whole wheat noodles and open up a bagged salad. Kids like a salad bar too - again, they can pick out what they want.
Make their own pizzas - use pizza dough or naan bread. Put out the toppings and let people do their own.
Breakfast: assorted fruit, yogurt, bagels, cereal and let people fix it themselves. I keep bananas, clementines and apples in a basket - fruits that don't require refrigeration or prep. Pre-cut melon and pineapple in chunks for self-serve.
If you want eggs for breakfast without people having to cook them on their own, pre-bake a quiche or frittata (basically a quiche without a crust) in a pie pan. They can be sliced into wedges and reheated by anyone who wants some. You can use typical omelette fillings: spinach, quiche Lorraine (Swiss cheese & bacon), broccoli. Just use defrosted frozen veggies, cubed Swiss and half/half, whirled through the food processor). If you want it to look fancy, arrange strips of red pepper or tomato slices on the top.
Lunch - make your own sandwiches, or soup, or leftover dinner from last night.
Make up a list of what's available, and tape it to the fridge. Let people know where to stack their dishes. Don't be afraid to use high quality disposable plates to cut down on the dishwashing. If you recycle and are responsible 51 weeks a year, it's okay to go for convenience on the remaining week!