We're going to need some details :) I tried doing this with an Android tablet, but the screen is just way too small. Now there are really nicely sized (15.6")

We're going to need some details :) I tried doing this with an Android tablet, but the screen is just way too small. Now there are really nicely sized (15.6") USB-C -powered displays for around $100 that could be paired with pretty much any Raspberry Pi to do the same. Or I could just shove an old 24-27" inch display on the wall with a VESA mount...