I've done the odd cruisy camping trip with a stovetop style espresso maker, this sort of thing:
https://i.etsystatic.com/7245813/r/i...77314_54lw.jpg
But usually to keep the weight down I just use a 'brew basket' that weighs 17g (I just checked) and was $5 on sale from macpac, with pre ground (plunger grind, not too fine or it can get a bit through the mesh), never been keen enough to carry whole beans and a grinder in.
https://i.pinimg.com/474x/ae/93/83/a...355056477f.jpg