I keep it pretty simple on the utensils. I have a can opener, fork, knife, spoon, set of chopsticks, and a simple mess kit with a pot, pan, and plate. I use a lot of foil.
That doesn’t mean you shouldn’t have a good set of cooking gear though. One of my favorite things to cook with is a big cast iron frying pan. Lot’s of folks swear by Dutch ovens. Back when I used to carry a lot of stuff I used my hand mixer, spatula, and cheese grater a lot.
It all depends on what you want to make a priority. I can pretty much cook anything with what I have if I use my creativity to fill in the gaps.
Old mesh orange sacks work well as a carryall bag or a pot scrubber.
Filling egg carton cups with sawdust or lint and pouring old wax over the top can make fire starters.
Not having a sink can be a bit of a pain but you can still keep your gear clean. I use a couple of simple methods to wash up.
1) I usually have a container of liquid soap with me.
2) If water isn’t available, you can wipe the dishes clean
3) Sand and gravel work as natural abrasives
4) Vinegar in a burned or stained pan usually will work it loose with soaking
5) Keep it simple. The less you dirty, the less you have to clean