I for one hate the touchpad on my laptop. Having an ultra-portable that weighs less than 3lbs, it’s even a bigger pain because everything is scaled down even more making it much less friendly if I plan to do any work in one location for an extended amount of time. So, I’ve resulted to carrying a micro-mouse in my bag with a retractable cord for the last year or so, and I love it. They take up next to no space, and they’re nice and light too.
Here’s a couple compact/portable mice on sale at Buy.com: