So sorry, I seem to have joined the party late. I love this idea and hope it can be implemented! Haven't had a chance to read all the comments but did want to mention something. I see things about lamps and solar stoves, wondering if there could be some solar chargers that people could use to charge their phones? Solar stoves are nice but people won't use them at home, whereas a charger is an everyday thing everyone uses. Just my two cents.