The Millennium Falcon
It's the ship that made the Kessel Run in less than twelve parsecs.
Kubrick's long shadow looms large over especially the opening of Lucas's space epic.
WWII was an enormous influence on all kids of the 50s and 60s, and Lucas was no exception. From the general good vs evil nature of the conflict to the specifics of war epics like The Guns of Navarone and air-heroics of The Dam Busters and 633 Squadron, it seems entirely possible that Star Wars would never have existed if not for the war.