I use Tailscale as is. Mainly to connect to my devices but also for fancy stuff like this:
Some of my servers are only available via Tailscale. They don’t have any open ports to the internet. Even authentication to these servers via SSH is handled by Tailscale SSH.
I have some SMB shares on my local server and I gave access to it to some friends via Tailscale by sharing said server and lock it down ACLs. So people that have “shared” access can only access the server via SMB’s ports.
One more thing I wanted to use but then stopped screwing around with it: Tailscale Funnel. I wanted to access some local webservices on my server via the internet without connecting to Tailscale first but also without opening ports on my local router. The downside of Funnel: no custom domains (yet). This means I would have to use their Tailnet name instead. Instead I went with Cloudflare Tunnel.
One more thing that was annoying with Funnel: I wanted to use tsnet for quick file shares via a very basic HTTP server. Tsnet created “virtual” machines within mail Tailnet which I could then funnel to the internet. Unfortunately, Tailnet DNS propagation is absurdly slow. It’s not really made for on-demand funnel usage. It would work just fine while being connected to the Tailnet via Tailscale, but not via Funnel over the internet.
All in all, I’m super happy with Tailscale. Setting things up was so absurdly easy and it just works.
Pretty much that. I don’t want to host „mission critical“ stuff by myself nor do I want to care about backups. With Tailscale I’m just a sign-in away to be able to access all devices connected to it