Or just have a huge TV that's flat enough to act as art. I think most TV manufacturers include some sort of "art" mode where it just shows a photo or slideshow. Heck, all of the streaming boxes do it.
I don't know of any eInk displays that could function as TVs, and a TV in "art mode" will end up putting out a lot of backlight, which is basically the opposite of what you'd want when you're trying to hide your TV.
