Recently idea_beans shared a Thing to print a professional Kinect XBox lense holder. This thingy can be used to increase the resolution of a Kinect/PrimeSense sensor by sticking common 2.5+ reading glass lenses to it.
Unfortunately, the Kinect does not have an auto-calibration feature which means that you won’t be able to scan 360° with this upgrade. However, the PrimseSense Carmine 1.09 is reported (and [un]officially confirmed) to auto-compensate for the lense distortion.
Our ReconstructMe 1.2 using Carmine 1.09 High Detail post has more on that story.