I once thought of this. Given how, in the time since TS4 was launched, 3D printers have gotten cheaper and cheaper, they're just as accessible as paper printers. Halfway decent starter level printers are like $150. I paid that for my new office printer this week.
Definitely easier than trying to extract the game files, and then try to convert them in CAD software like Autodesk. Simply having it as a utility, download the proper files, send them to Shapeways or your own 3D printer (or a library's), and your done.