Yeah, as long as it’s all made from secondhand tech and I have some real control over it (preferably using open source for everything) I could see doing a bit of that.
Even just expanding on this could be nice - my grandparents used to have an intercom from the kitchen to the workshop. I couldn’t get their machines to work at our place (they’re some sort of magic old technology that sends data over the AC wiring, but our workshop and kitchen aren’t on the same circuit and we have lots of noise from adaptors) but some quick video call software could be nice for when one of us is down there - even better if it’s LAN only.