Mine are in bookcases in the living room, with the stash up above the 6 foot level, and running around the top of the room.
As I use up the shelf space, Anne buys another pair of doors with glass centers, and I mount them on another set of shelves,,,,,,I have one 3 shelf unit that is a lot smaller and hangs on the wall,,,,,,for the "latest finished" models, this unit is also covered, but with Plexi instead of glass
When/IF I exceed 240 models in the living room, we will have to find another solution,,,,,,that won't be for a number of years, though, lol
Rex