Ask HN: How to? Multiple monitors across house, exact same output

Fellow HNers,

I'm finding that with work from home, it helps to give myself a change of scenery by working in different parts of the house.

Whilst I could simply do this with my laptop, I much prefer working on large displays.

I have a wireless Lenovo keyboard (which has a built-in mouse trackpoint), and I'd like to place a large monitor in 3 separate areas of the house.

I also want to be able to walk around the house seamlessly and work on any of the displays - without having to plug/unplug anything.

What's the best way to do this?

Thanks! ^_^