This could be used to dually charge any MacBook, iPod (less the shuffle), iPhone or iPad from the same brick charger. The user simply snaps the female-MagSafe-to-male-30-pin adapter to the existing male MageSafe connector extending from the brick charger to charge any Apple device.
Note: I'm not sure if this will work because of the power consumption needed for a MacBook as opposed to the other devices.
