Nice. Reminds me of the <a href="http://www.suntactics.com/shop/usb-scharger-12/" rel="nofollow">http://www.suntactics.com/shop/usb-scharger-12/</a>, but uses scrap wood instead of the sun.
A reasonable sweet-spot pricing too, but someday I hope to see DIY tinker'ers get some real meat and potatoes wattage off a steampunk wood stove -without a dangerous and difficult DIY boiler.