We usually prepare one large dinner with all the fixings like a ham or roast. Then we use the leftovers for sandwiches for quick suppers or lunches the rest of the trip. We also have been known to do lasagne quite a few times. I buy one of those disposable foil pans, and when the lasagne is gone, the pan gets thrown out. We often do baked potato bar too. Have chopped up fresh veggies, onions, etc available along with shredded cheese, and let everyone make their own microwave baked potato with toppings. We usually bake the potatos in the oven the night before, so they just heat and prepare when they want. That is a great one if you have active teens running around. They can fix their own whenever they like! We also do quite a bit of pasta and salads.