USB Batteries

Now, how cool are these? You won't need another battery recharger ever, since you now might be able to use your own usb ports to plug in your new usb batteries.
They're normal AA batteries made of Sealed Nickel-Metal Hydride (NiMH), they take a few hours to charge but still they're very handy and easy to use. You can buy them at thinkgeek.com for about $20 the pair.