"No one should ever underestimate the value of ergonomics. More and more people these days are suffering from carpel tunnel or repeated wrist syndrome every day. Surely there is more that users can do than just shake their hands after a long day on the desktop or laptop.
One of the great contributors to the plague of repeated wrist syndrome lies right next to your computer. That’s right, the mouse is one of the great contributors to carpel tunnel, and something has to be done for users unless they want to have some metal bands on their hands.
Humanscale has created an adjustable ergonomic mouse called the Switch. It has an adjustable palm rest and size for ergonomic stability. It also has a navigation dish to prevent carpel tunnel from scrolling. Not only is the Switch good at ergonomics, but it can be used ambidextrously as well. Hence, the name of the Switch.
This is good, since most mice are designed for right handed people, and left handers get left out. I’m not left-handed myself, but I believe that the southpaw community are often left out on certain devices like scissors, notebooks, and most desks." (Continued via Coolest Gadgets) [Ergonomics Resources]