James Sharman's build is nuts. He has been at it for several years.
https://www.youtube.com/watch?v=3iHag4k4yEg&list=PLFhc0MFC8M...
Usagi Electric is taking it all the way with a vacuum tube build. https://www.youtube.com/watch?v=y149hLe1zYo&list=PLnw98JPyOb...