I take the C40, a V60 and papers and enough coffee for the trip in an Airscape. Whenever I’m traveling I usually take an ‘extras’ bag (I use a Filson zipped tote) which has a sketchbook and pens, camera and iPad so the coffee stuff gets put in there. During Summer I can get a weekend’s worth of clothes in there too for single bag traveling.
I bought my Dad one of these but haven’t had a need for anything that portable myself as I tend to stay in hotels and don’t camp etc. It’s great though, and Snow Peak do a few other coffee related bits for outdoorsy folk.
I’m curious about the Picopresso and may try one at some point.
If space was a real premium I’d be inclined to take the collapsible pour over thing mentioned above and papers and the C40 along with pre-sealed bean doses.