I was quite shocked at the amount of tiny and large display options out there. I might even make a YouTube video titled "Home dashboards have gotten cheap and easy" with everything I've learned so far.

Take a $15 Pi Zero W 2, and a screen costing anywhere between $50 to $200. 3d-print a case around them both, and for a third of the price of a new iPad, you'll have a simple and secure single function screen in your house...