I used to keep a polycarbonate French press in my rucksack; upgraded to an AeroPress when they came out. Found a pocket-sized machined steel campers' pepper mill in Germany that also ground coffee beans well, and in a pinch I could set it to "Feingemahlen" (finely ground), grind some locally-procured beans into a canteen cup on top of the old Yukon or potbelly stove, and share some "viehzüchter kaffee" (cowboy coffee) with a buddy or two. That was a treat in the field or downrange, wherever a good heat source was available. I probably made terrible coffee, but nobody complained. I think it was the camaraderie, not the blend, that I remember most fondly.
Nowadays I mostly stumble downstairs to the Keurig in my Crocs & fleece lounge pants at my dog's bladder's urging, with nobody to share that first cup with since nobody else in the house is up at that hour. Having a single-serving machine instead of the old drip or percolator means I don't have to worry about whether anyone else likes what I make for that morning pot. I now prefer BRCC's "Beyond Black," $62.50 & free shipping on a bi-monthly subscription for a 5 lb. bag of whole beans. I grind the next day's ration to baby powder before I go to bed each night, & load 2 or 3 of those reusable filter cage contraptions that let you use loose coffee instead of K-Cups. BRCC's "Murdered Out" is my favorite but a bit beyond my budget. "Blackbeard's Delight" is great, too. My wife got me a trial pack for my birthday - one pound each of BRCC MO, BD, and CAF ("Caffienated As F^@%").
That last one tastes somewhere between burnt leather and used fifth wheel grease, and I don't care to explain or justify the label to my 9 y/o daughter. So, I gave the 90% full leftover bag to my Millennial neighbor to help him break his hipster chai latte habit. Over the following month I noticed the Blue Apron boxes stopped appearing on his porch, a Silverado replaced the Fiat formerly parked in his driveway, I've seen him raking his own lawn, and when his wife's declawed indoor hairless cat died he asked me if I knew any local Labrador breeders. I'm going to get him another bag for Christmas, along with a Caterpillar or Carhartt hat to cover the spot where he'll hopefully have clipped off that "man bun." One step at a time...