I show mythtv, jellyfin media server, hdhomerun dvbt2 network tuner, vbox satellite network tuner in the sharing at the moment but I've looked no further.

I use home and guest vLANs too. There is a chromecast plugged into the living room tv on the guest LAN.

I think I've gone as far as I want with mum's laptop for now. I've done all the Windows updates, removed some unwanted sotware and put LibreOffice, Firefox, Thuderbird and VLC player on it. I've also put a copy of our photos on it. I'm not sure mum needs any more software but it can be added later if required. I'll copy any files she wants from her desktop PC when someone gets me a log in on it.

Next task sometime will be to get mum using it and I'm not looking forward to that... One perhaps fortnate thing though is that the kde plasma desktop she's been using isn't that dissimilar to the Win 11 one (and I've moved the task bar to the left and made Win single click to make things closer).