Best way to display in a digital frame

Looking for a good way to display photos from my library as a rotating slideshow on a small screen, something like a digital photo frame or Echo Show. I'm willing to buy a device, but not sure what to buy.

(By "rotating slideshow" I mean something like a screen saver—always on, shuffled, doesn't require explicit action to turn it back on again after the device gets used for something else.)

Of course with enough effort I can manually export and upload each picture I want displayed. But I want something automated: create a Lightroom album that contains the photos I want displayed, manually add/remove in Lightroom as needed (ideally as a Group Album so others can contribute), and then those changes are reflected in the set of photos displayed on the screen.

Any recommendations?

(Bonus question: how about a TV screen? I have an Apple TV, but unfortunately the Lightroom app doesn't seem to support Apple TV screen savers.)