I have a lot, so a few hang from the ceiling, some hang on the wall, but most are sitting on shelves.
Back there in the dark, is larger portion of the "war room". I moved all the band gear in, so that area is full of drums, amps, PA, and guitars. Most of the models I had in that section got compressed into smaller section, seen above.
I did build a small set of "built in" shelves...recessed into the wall, where I keep most of my choppers still.