Awesome idea.
My parents and younger siblings all live in a cottage in the middle of nowhere, completely off the grid using solar power 12v where they can for small things here and there and just mobile phones for internet. My younger siblings are getting to an age where they all need notebooks for school but my parents refuse to buy any for them as they have no way to easily charge laptops and it doesn't suit their off the grid lifestyle.
So because of this I am already seriously considering buying them one of these solar powered notebook/device chargers. They're a pretty cool idea and means that my parents get their off the grid living while my siblings finally get to enjoy a PC when at home instead of just when they're at my place. I am looking into solutions for this locally but if I managed to win these that would really make my, and my families, holidays!