So this is pretty cool: Autodesk, the maker of the popular 3D design software AutoCAD, has just released a new app for the iPad called 123D Catch. The software enables you to capture 3D images of things using your tablet's camera.
No, you won't need any glasses to view these pictures. Simply use the app to snap photos of almost any object (it doesn't work well with glass) from multiple angles, and let Autodesk's 3D rendering software take care of the rest...