So I have done all the methods and honestly keep coming back to the most simple.
Aeropress, pourover w/filter, or a drip device (like the gsi coffee rocket) are the smallest to pack, easiest to use, and with least cleanup while still making coffee with preground or fresh ground beans. If you want to try and be a little fancy and fun you can get a mini turkish coffee pot. its more similar to cowboy coffee done up espresso style almost but if done right you don't get much in the way of grounds in your cup.
if you could care less if your coffee is 2 hrs old from a truck stop diner, then just get some instant stuff and call it a day. maybe add in some flavorings of some kind like hot coco, or various creamers.
if you are at all a snob but want it to be easy, then the options i use are about the best i have found. no special percolator pot, or french press needed. You can get french press kits that work pretty well for the jetboil etc if thats the stove you use. but outside of those purpose built kits to make a new use for an existing piece of gear there isn't much else in the percolator / french press world that doesn't take up a good chunk of space.