I do yeah, Tailscale is generous with the "device" counts so I'm not worried about using them up -- especially as I spin them up as ephemeral, so as soon as I shutdown the stack they're gone, but the "random" name persists across shutdowns as I store it in a file that stays out of git.

The subdomain routing then works by pointing to that ephemeral machines ip, and my site in dev mode populates the sidebar with active links for this so it's not like I have to keep updating bookmarks etc. Super convenient. It's probably the weakest part of the setup (no https) but works fine for my needs.