I keep meaning to write about how great my new notebook toy is. My girlfriend gave me a Microsoft Wireless Notebook Optical Mouse 4000 for Christmas this year and I love it. It’s got an omni-directional scroll wheel (which is also a button) and a side-button, so it has all the functionality of my normal mouse. The slate-grey toy has a USB dongle which fits into a slot on its bottom so you don’t lose it. The dongle also serves as the power switch; when it’s plugged into your laptop the mouse is “on”, when it’s fitted into the bottom of the mouse it’s “off”. The mouse is powered by a single AA battery and mine has been chugging along for more than a month now. It’s small enough to toss into my laptop briefcase and — of course — you don’t have to worry about a 2′ wire getting tangled with all your pens and the random stuff in your bag.