Difficult to me, my hobby is a bit of barrista, owning a portafilter from Ascaso permitted for professional use. .. Coffee is nearly some religion. Only thing what I would do if in the middle of nowhere is a french press, rather coarse ground coffee and Water not boiling but between 90 and 94 Celsius, 12-15g coffee per cup, min 70g coffee per litre and 4 minutes before push down.
But again nothing compared to a proper portafilter and a grinder like an Eureka.. But there is some 3KW and 230V required .. an Inverter and carrying all this somewhere in the African bush is rather decadent luxury.