So in theory, I could get a wildcard certificate for my domain and have TLS on arbitrary subdomains...
But that requires that the nameserver exposes an API for updating the TXT records...
@vaporeon_ it is extremely handy if you can manage it
@vaporeon_ pawsy? not sure if the meaning comes through that way though
@vaporeon_ fur just one example, though purrhaps not to relevant to your case, https://glaceon.social/@monorail/115635169374328779
@aescling I'd just use the Firefox tab containers extension for that 
@vaporeon_ anyway, idk, being able to section off websites from one another and host them from the same machine can be useful. see, e.g., https://cat.family vs https://æscling.cat.family
@aescling Oh... Apache's VirtualHost feature? Both are served by the web server, but depending on which domain was requested, it serves different content?
@aescling Having arbitrary subdomains would be cool, so many possibilities (but also kind of pointless if I only have one physical server with one IP address anyway?)