Are you always cold? I am constantly freezing and my fingers are the worst, I have even been known to wear gloves indoors before. Now there is the USB Warmer Mouse II that actually warms your hand.
Not only that but it comes in all kinds of colors and has a cool shape that is ergonomically correct. Plus, once your hands are all warm you can just turn off the heat so you can continue to use it year round when the heat is not needed.
The materials it is made from are heat resistant, so your mouse and hands are safe. The really great thing about this mouse is the price, it is only $23.00.
USB Warmer Mouse [via Techie Diva]