I host on an old i5 dell optiplex and usb raid enclosure i keep in the cupboard under the stairs. It's mostly for making the storage available to my other devices. It's also a tailscale node.
Ah OK, how does the IP addressing work? Can you have users hit your residential IP and be fine with your ISP?
I'm the only user really, but yes, some services are available on a public DNS. Most of them are only on the local network though. Never had any issues with inbound traffic on my residential connection.