Having an induction charger for your Wiimotes is a necessity. Having one that can charge your Wiimotes and two USB devices at the same time might be a little extravagant. Thankfully, at $35, the Konnet PowerV Duo a justifiable extravagance.
The induction charging comes courtesy of two silicone jackets you slip onto your WiiMotes, and two USB ports can charge phones, MP3 players, or even, with the included connectors, your Nintendo DS (for MAXIMUM NINTENDO CHARGING ACTION.) Pick up a PowerV Duo for $35 at Amazon. [Konnet]