For solo trips, or when I take only one grandkid, I do freezer bag "cooking." One pot, two freezer bags of dried food, two cozies, two spoons, two cups. The only dishwashing required is for cups and spoons. For solo trips, I use the pot as my cup, so all I have is the pot, the freezer bag and the spoon.
For family trips, I still do the freezer bag "cooking" (really rehydration), but with two meals per freezer bag. So for four of us, it's still two freezer bags and two cozies. However, I take plastic bowls (the 2-cup Ziploc bowls with the rim cut off), one apiece, a spoon apiece and a cup apiece. I rinse cups, bowls and spoons and then scald them in boiling water. (The kids' cups contain cocoa--best way to get milk into kids--so do need wiping out rather than just rinsing.)
For short solo trips, I use an alcohol stove. However, I've found that for solo trips of a week or more and definitely for group trips, the total weight of stove plus isobutane cartridge for a canister stove (mine is a Primus Micron) comes out less than that of an alcohol stove plus fuel. (There's an article on thru-hiker.com that confirms this.) That is particularly true if I'm going to be cooking anything, such as fish. Over a longer time, the isobutane canister stove uses enough less fuel (by weight) than the alcohol stove to more than make up for the heavier weight of stove plus empty cartridge.