This: http://www.logitech.com/en-au/product/wireless-trackball-m570 http://www.logitech.com/en-au/product/wireless-trackball-m57... (price here is a bit excessi

This: http://www.logitech.com/en-au/product/wireless-trackball-m570 http://www.logitech.com/en-au/product/wireless-trackball-m57... (price here is a bit excessive - you can normally pick them up for ~$50). I've also played with various mice over the years, but love this (I've bought my own one for work, in addition to the one at home). It doesn't tire out your arm or wrist (your thumb does the bulk of the work), and since it doesn't move, you can use it in limited space. My hands are big-ish, but this one is big enough to comfortably rest your hand without cramping it up. It has forward/back buttons for browsing on the frame, and the wheel acts as a third button. Going from mouse to trackball takes a little bit of getting used to (about a day ;-) ). If you have coworkers that occasionally need to drive your computer, it's a bit of a pain, but Logitech receivers allow pairing of more than one device, so just keep a cheapy 'normal' mouse on your desk for those occasions. In general, I've used Dell, MS, Logitech, and el-cheapo mice - Logitech wins out every time.