I use tailscale for hosting gameservers for friends and the occasional watch together on jellyfin. Kinda scuffed setup with one burner github account for login. And ~10 devices connected to that network. So I need to authenticate every device myself (at the beginning and sporadically) but I don't need to pay Tailscale for adding multiple accounts to the network.

At the beginning I tried to do set up everything with my own wireguard server. I only have a public v6 IP, so some of my friends connected without problems and for some it would not work. After I think 3h helping them in their router settings I just gave up. I looked up if I could rent a service somewhere that gives me a public Ipv4 relay, found Tailscale instead and stopped looking for something else haha. Sometimes it's not worth the effort.