Old laptop, Debian with docker running nextcloud, navidrome, jellyfin, gitea, librespeed, wireguard, dnsmasq, and nginx as a reverse proxy.

I recommend DuckDNS as well, you can run it both sides and set up a daemon to update the domain when there is an IP change automatically.

And with Wireguard you can set up a tunnel between both locations so you can share anything you need.

I’m using Debian, with Docker and running Jellyfin, Nextcloud, Navidrome and Wireguard on Containers on my old laptop. So that would be my suggestion.

You could install CasaOS and/or Portainer, on top of Debian if you want an easier way to manage your server and containers.

Markdown (there are plenty of editors to chose from) + Pandoc (to generate the output in multiple formats), would be my recommendation.

Been doing the same, just leaving my password-store offline, for me this is enough.

Just so you know it is possible, you can probably disable sleep or other things the laptop does by default when you close the lid, so you can leave it running while the lid is closed.

Did this with my old Dell laptop (that is running Debian server now), and now I access it over ssh while the lid is closed and very rarely open the lid and do stuff on the actual device directly.