Kinesis Industries has released the next version of their wind and solar charger the K3 (like the K2). The core of the unit is a large 4,000 mAh battery for storing power. You can fill up that massive battery via AC wall power (or USB), a solar panel, or wind power. That power can then be pushed out to your other gadgets through the USB port.
On the side of the K3 Wind and Solar Power Charger is an LED array to show you the power status of your battery. There is also a storage pod on the bottom of the K3 for storing your extra cables or tips. Yours for $93 here.