On my old Dell workstation I pulled out of the dumpster of a local business, which now has a second life as a Unraid NAS, I’m running 29 currently. Used to be running more, but I got rid of some after I was done using those services.

Among other things, the server runs my entire Servarr stack, as well as the various media servers for video, music, ebooks and audiobooks, and my Gitea. There’s a bunch of other stuff as well, but those are the most important to me.

Jellyseer works with Plex as well.

Yes, to both Android and iOS. It uses HTTPS instead of SSH, since most phones don’t support that without additional software.

I personally use the Obsidian Git plugin and sync it to a self-hosted Gitea server. You could also use GitHub or something similar, if you don’t mind them.

I use containers on Firefox to sandbox YouTube, and then have a throwaway account that’s literally just for YouTube and nothing else. Everywhere else on the web, scripts from Google are blacklisted using uBO.

You can’t just ask that. Not without at least taking them out to a fancy dinner first. Maybe a little dancing.