I'd really love to see an off the shelf distributed FS server in a NUC form factor that you plug in and is largely self-managed. Automatic atomic updates, QR codes to add a server to your swarm, manage it through a browser, client side encryption so a compromised server doesn't mean data exposure. If you want to get fancy, you could have user quotas so you and all your friends set up a single swarm with shared storage and you'd have a very distributed cloud. Optionally add a hetzner instance to the swarm.

I've been thinking about building this with friends, in the short term though you could do this today with Garage http://garagehq.deuxfleurs.fr