Joystiq has a long and storied history with CTA Digital's bizarre gaming peripherals. We've covered so many of the company's whacky products, from inflatable go-karts to translucent steering wheels, that the recent announcement of the Deluxe Power Grip for the 3DS isn't exactly what we'd call "weird" (especially in a world where the Game Boat exists).
For $30, the Deluxe Power Grip claims to double 3DS battery life, add a kickstand (just what the 3DS was missing!), and
Update: CTA Digital tells us that, while the Deluxe Power Grip itself is charged via USB (thusly enabling charging of the 3DS itself), the Grip does not enable you to directly charge the 3DS via USB. Sorry about that, folks!