I recently improvised this pour over solution while traveling and it's so simple, light, compostable and cheap, I've been taking it camping.
Bring paper filters and ground coffee, and use a fork or cut a forked twig to keep the filter from collapsing into the cup. Here I doubled the paper filter to make it stronger. You could get all fancy by stringing it above the cup somehow. You don't need anything fancy to make totally great coffee!
Next level on quality: use a hand grinder to grind whole beans just before brewing.
Third level: if you'll be out more than a couple weeks, roast green beans in a dry frying pan or pot.