Researchers at the University of Rochester have developed a cloaking device that uses standard lenses and optical equipment rather than exotic materials. It works across a range of distances and angles and avoids distortion of the background which often reveals that cloaking is being attempted.
It may not be quite Harry Potter’s invisibility cloak (it doesn’t flow elegantly and smoothly) but’s it’s an interesting development and a good example of standard components being used to create an unusual device.