Solar Power Beach Umbrella

While reading a pc magazine i came across a list of products that included a backpack with a flexable solar panel on it that could charge any usb device. the solar panel was about 1ft across and 8 inches in width. Now heres my plan : A large beach umbrella which the top was a solar panel (the flexable kind like the bag had) that had an extension cord type plug outlet that you could run a radio , laptop, ect. it could be used at a beach (of course) or maybe a park , you could even attach it to a picnic table and power your laptop outside. It would include a charging battery that would save the energy from the solar panel if it became cloudy. You could sell a number of accesories such as a mini cooler or a cell phone/ipod dock station. Heres another idea, the cloth-like solar panel but in the form of an 8x8 blanket that could be layed out in the sunlight to gather power for whatever. you can roll this stuff up and store it anywhere.0the solar back pack that has the flexable solar panel that im talking about.