This is pretty cute. The Karpiuks made a Millennium Falcon out of cardboard boxes for their 9-month-old son. The Millennium Falcon is, of course, the spaceship Han Solo and Chewbacca drove in Star Wars.
The cardboard version was made out of cardboard boxes, then paper mached, then spray painted. There are also pictures of the process, like this one:
More here. [Apartment Therapy]