Just buy a tv, then don't connect it to anything. But likely that you are going to connect something smart to it, so it doesn't matter.

I recently bought a Thomson TV that's HD and with no smart features at all. The only downside is that the image contrast is not the best.

Your best bet would be a commercial display. Though it'll be double the price, at least, and you'll need an hdmi switch and a soundbar more like as not.