Min-Kyu Choi, a graduate of London’s Royal College of Art, is rethinking that part of the world’s bulky three-pronged plug (similar to what we have here in the United States, but at a different voltage). The Folding Plug is the result of that, which can be used either in its flat state or in a more conventional unfolded mode that still sits in the wall with a lower profile than usual. The real beauty of the flat plug design is when you combine it with a Multi Flat Plug adapter (pictured below, middle)

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Folding Plug concept redesigns the plugs we know and hate