Few people would disagree that Logitech Mice have always had a great design. They are usually very comfortable to hold and work really well. Surely you imagine that the company also had different prototypes that did not make it to the production line. It always happens to be caught up in what you can do with peripherals and you can easily overdue it with mouse designs. Logitech has decided to show us some of the crazy mice designs that did not make it, ideas that prooved to be wrong. For instance, there was a mouse that had 3 scroll wheels. You can imagine how confusing it would be. Then there was one that was actually 2 mice in one. There was even a plan for an air tunnel to be added to your mouse. It was aimed to counter sweatty hands but hey, how much good would an air breeze do you. In any case, some of them were really crazy.