The iRock, developed by Micasa, is a $1,300 chair-meets charger. You can pop your Apple device into the extended arm, lean back and rock away. Your rocking movement will charge the device with gears that function essentially as a wind-up generator.
With an hour of rocking, you can get your battery up to 35%. So we recommend drinking a lot of coffee so that you don't noticed the hours of nonstop movement you need for a full charge.
And yes, there are even speakers in the head rest. Consider it the old-fashioned rocking chair of the future.