You can now use a modified Microsoft Kinect device to scan stuff into 3D files, it requires some programming skills along with the Kinect and an Arduino microcontroller and of course a Makerbot 3D printer. There is a book on Amazon on how to get it working…still might be cheaper and eaier to buy a 2nd kit.
BOOK-Making Things See: 3D vision with Kinect, Processing, Arduino, and MakerBot