MintyBoost was a terrifically handy DIY USB charger, housed in an Altoids gum tin. It worked great, until Apple changed the way it charged devices, gimping third-party chargers. But have no fear! The MintyBoost team is on the case.
Like a deluxe version of the DIY MintyBoost AA charger, here's a DIY that explains how to assemble a USB charger that is not only rechargeable—with a Lithium Polymer battery—but also solar powered.