The coolest way to display these is to have them sublimation-printed onto fabric (not silkscreened; silkscreening applies the ink heavily enough to reflect sound, while sublimation printing leaves the fabric still soft and porous), then wrap them onto frames containing sound-absorbing material. Hang them around the place and they improve your acoustics and aesthetics simultaneously.

https://www.avsforum.com/threads/diy-custom-printed-movie-po...

LED walls are cool (and cheap via China) otherwise, and you can start small and then expand if you want since it's relatively modular, just a bunch of square LED panels linked together. You would need a driver though which you may or may not be able to hide behind/somewhere else, makes it kind of bulky compared to just a vertical TV :)