"Electro Muscular Stimulator", a "gym that clips to your hip". Advertised world-wide. This thing sends electric impulses thought the muscles and, according to the commercials, turns you into a walking heap of muscles in no time. It also makes good coffee, fills your tax forms and does all sorts of cool things. Apparently people buy these things...

(Actually, this and similiar devices actually might work if miracles happen, but it sounds that "regular" sports and excercises are a. much more effective per time spent and b. free.)