Every home in the developed world has a plethora of devices and gadgets being recharged. Old houses don't even have sufficient power outlets to manage the demand.
That is why we really need ways to recharge all our equipment without plugging it into a power outlet on the wall. Thus some of the new products that are really interesting are those that help solve this problem.
Springwise talks about some of them, and my favourite is one that lets you recharge your mobile phone by moving or dancing. How much fitter would we be if everyone charged their phones like this?
By Carruthers via Aide-mémoire