ratboy -
Two very large curio cabinets. They are in a separate computer/model room, and my wife has almost gotten used to it. No matter how much space you have, there will never be enough. Try getting creative, for example, if you have three of the same or similar aircraft models, or aircraft that you want to display together, have two on the shelf and one on a stand, "ifnflight" so to speak. That way you have three planes in the space of two. Model cars can be stacked in display cases or you can make a rack to display one over another. A little wood and inginuity can go a long way.
Archer out.