The iPad Rocking Chair has a built-in generator that transforms each rock into power, and charges the iPad or iPhone via its dock. Supposedly, one hour of rocking will get an iPad up to 35% of a full charge. It also equipped with a pair of 25-watt speakers built into the back of the chair. The iRock is available now for $1,300 in white, with other colors to be added soon. "The iRock is a product that explores how furniture can interact with technology and actually support the power for this technology. Movement is energy and to collect as much of this energy as possible is one of our future challenges. The laws of physics dictate how movement and friction constantly creates a vast amount of energy that in most cases is lost. iRock is a attempt to collect some of this energy and put it to real use. If you use iRock for 60 minutes you can recharge an iPad 3 to 35%."