MIT has come up with what they call SOFT Rockers.
They are unique loungers made with solar panels to collect and generate energy.
You would be able to rock them so you can properly align them with the sun to maximize energy production.
When you sit inside it gives you feedback on how you can change your positioning to gain more power.
You can then charge or run any USB device like your laptop, cell phone or mp3 player.
Photo Credit: Philip Ropert