New tech on chargers for the smartphones looks hot!
"The EcoCharge system
is a portable and green solution for giving your
devices a quick boost by recycling heat energy. Using thermoelectric
generator modules, the unit converts heat generated from cookware,
home-heaters or any other source into usable electricity."
Designer: Ardavan Mirhosseini
This is most likely in design phase and not an available product.... but do comment if you have tried this charger