Using the kinetic movement idea of self winding watch, could this technology be incorporated into an everyday frisbee? The spin of the disc could generate energy and could indicate to the user when it is fully charged.
There must be something in a flat pack IKEA style solar charger. The pack could be part of the OPEN DESIGN network so anyone could contribute to the designs online and everyone could download for free and build it themselves. Additional to this concept is an IKEA style instruction book which is completely visual and contains no words, overcoming language and illiteracy barriers. (this is something Im very interested in)