That sounds cool. I did browse the Raspberry Pi compatible touchscreens many moons ago but didn’t do anything about it. However, I’ve now moved and I have a centrally-located airing cupboard that used to have a tumble drier in but I’ve been using it to drag TV, internet and various cables through to the back of the TV and media centre and up into the loft. The other walls back onto the kitchen and hall (opposite the toilet) and I could definitely see a good spot for a screen on that hall wall as I pass it a lot. I could pass the cables through the wall to the back of the screen and it might make sense to have my Raspberry Pi with HA and any other hubs I need (trying to trim them down) in there too.

So long story short, this could definitely be something I could look into. There are commercial panels but for the price you often get 4" screens and a bit too much fanciness whereas you can get a generic 10" touchscreen for the same less (although the SONOFF NSPanel Pro is tempting).

Fancy starting a new thread with an overview on what you did?