If you have seen our list of life-altering inventions then you know what it’s like when some nifty individual comes along and turns our world upside down with their creative genius. For every successful invention out there, however, there is a whole slew of failures and every once in a while those failures not only go down in history as being completely and utterly useless, but they also end up on lists such as this one. These are the 25 most useless inventions ever.