I used to go through the ritual of setting up the camp stove and digging out the percolator, but I've honestly just gotten too lazy to deal with cleaning out the percolator after each morning's pot of joe.
My all-time favorite way to make the perfect cup is doing a pour over with a glass Chemex carafe, Bonavita pouring kettle and some quality 100% Kona beans.
I'll also second the Nespresso. Hands down the best espresso coming out of a capsule/pod type machine.
Last year we kept a small Keurig in our rig for guests who wanted a quick cup of joe and a Nespresso Lattissima Plus for when my latte craving needed to be satisfied. But my daily cup was usually made with this: Ingeni Coffee and Tea Maker | World Market
. A very good cup of coffee similar to french press, easy to clean, and works equally as well with loose leaf tea.