Jim Reagan W0CHL has made a compact build using a Nextion display.
He used a Context Engineering (Fry’s Electronics) case. It’s a tight fit and not for the beginner. I had to “mill out” (dremel) areas for the stand offs (they are nicely recessed on the front panel). He also chopped off (with a bandsaw) off back 1 3/4″ of the case. It’s using the 3.2″ Nextion display and has a quiet 24 volt fan to keep the finals cool. The final size of the case is just 3 x 6 x 6 1/2″.