I typically either bring a French press out while car camping (jet boil to boil water quickly) and I find it the easiest way to make larger amounts of good tasting coffee. I love a solid two cups in the morning to sip on!
I’ve also used Starbucks but I just recently tried the Alpine Start Dirty Chai instant packets and they were honestly so much better than other istant coffees I have tried. I was mixing half a packet of the Dirty Chai and a full Starbucks instant packet to stretch the more expensive packets a little further and it was great. I’ll definitely be repeating.
Also, FYI Costco usually sells two packs of the instant Starbucks packets for a MUCH more affordable price point.