USB Copper Top
usbcell
Well they are more of a limegreen top, but of all the chincy USB gadgets that I’ve seen come and go, this is actually something I could see myself buying. Essentially it is a rechargeable battery that charges off your USB port. This would be highly handy for a long road trip, or a trip to a foreign country where you would normally have to burn AA bats, or bring along a chunky charger.
Cool stuff, and the reviews so far have shown on a single charge the batteries have powered a digi cam for over 500 shots! Teknolugy Sickness!