hardware very portable, 13" or smaller older and reliable like a Thinkpad or Dell / HP business class ultraportable, although a 12" MacBook would be cool too as they’re small and light USB-C charging large battery SSD, likely a larger one for local storage and services comfortable keyboard for writing built like a tank but at the same time cheap enough that you don’t care too much about it’s appearance stickers at least a couple cores and 4GB RAM integrated graphics only, low res screen is fine good well supported wifi card and Ethernet jack (Intel) software OS LTS distro, likely Debian minimal with packages installed on top suspend properly supported userspace very lightweight WM instead of full DE i3 or Sway powertop and similar power savings modes and daemons Docker for running local services, but disabled and stopped by default for battery savings disable all visual effects quick screen off and sleep times software offline Wikipedia download with web UI office tools torrent client the usual vim and terminal tools mapping tools VPN clients VLC media player + ffmpeg