@hex One of the few uses I can imagine would be to enable vintage electronics experiences. That old HP Jornada with built in 56k modem suddenly could shine. (Mine also had a WiFi card added at some point and its TIA-232 port put to good use too, e.g. for a GPS receiver)
A nice little Mastodon instance. Mild trolling encouraged (keep it local), but not required. Malicious behaviour is not tolerated. Follow Wheaton's law and you'll be fine.