I have just started using nextcloud with Tailscale for my personal use. There is a awesome notes/to-do app called Joplin that syncs to nextcloud and I may start using for other features like the contacts and calendar storage for my phone.
@bitizenone Tailscale set up is super easy - you basically register your umbrel, phone, and any other device on the same account (likely through google) and Tailscale creates direct encrypted tunnels between your devices. Then you can just access your nextcloud URL over http at your umbrel server and nextcloud port even when you are away. You just need your phone to have Tailscale activated. There was a pretty good overview here
Giving this thread a bump because I’m also curious about federation, which doesn’t seem as likely with the Tailscale set up