Just picked up a
Logitech M305 Wireless Mouse and gotta say, pretty good deal. If you want a tiny wireless mouse for your laptop, could do a lot worse for the price. I only paid $18 at Best Buy retail for it.
I wanted it to be bluetooth (except the Bluetooth mice cost like $60+), but it's at least driverless and the miniature USB receiver can be stashed inside the battery compartment of the mouse so you won't lose it.