I have a whole room in my house for modeling. I have a standard bookshelf in which I display all my models. I only have like 9 built, so I don't need a lot of room (yet). Like EMAXX I get the cheap display cases ($6 or so) from Wal-mart to put the completed kits in. They look okay and you can make some nice scenery with some railroad grass/gravel and spray adhesive. And most importantly, I never have to worry about dust on the cars.