For vehicles, no one has made a full-scale B-wing starfighter. That would be extremely impressive.
Strangely, no one has made any starship cockpits, either. At least not that I'm aware of (excluding the Falcon). A couple different groups have made full snowspeeders but the cockpits, if I remember right, were fairly basic. The full-scale TIE interceptor and TIE advanced I don't think have a cockpit at all, not one that could be sat in. It would be neat to see some starfighter cockpits that could be sat in... There are quite a few references for them, too, even blueprints for a Y-wing cockpit, and Rebel Assault II has some great shots of the B-wing cockpit. An A-wing cockpit would be fairly easily, there doesn't seem like there's much to it, and an X-wing cockpit doesn't seem
too extremely difficult, either...