I thought this was interesting, it's an LED watch box that can be used to charge the watches even while stored and supposedly charge the watch up to 60% in 8 hours. Leaving out in the sun will always be much better, but I have seen people ask about solar charging solutions and although this one is expensive, some of you might be interested in it. What I think is cool, is you can leave the LEDs on while the case is closed so as to not disturb w/e you are doing, like sleeping. Nice to see products aimed specifically at the solar watch market.
It's offered by ofrei, New Arrivals it should be the first item.