If you’ve been looking for a portable soldering iron, modPRO has a battery-operated model that might be able to handle your remote soldering chores. Although this Chinese product could be difficult to locate, its 3-AA battery power source could warm you up to the task of finding a dealer. The suggested retail price is approximately $50 USD.

(Image: modPRO)

This multiuse portable cellphone charger is a third the size of conventional chargers and far more convenient. Simply put any ol' AA battery into the aluminum canister, plug in your cellphone using the appropriate adapter (available for all phones except Sanyo and Audiovox), and a chip inside the device amps the battery's 1.5 volts to a voltage powerful enough to charge and run the phone. A two-hour charge provides up to three hours of talk time. $25