Here is an extension cord that lets you move power outlets to where you need them. The SlideWire comes with slidable power strips. It also has a on/off lock wheel, two USB 3.0 ports, and a convenient power indicator light.
The SlideWire comes in 10 to 25 ft versions. It is ideal for hackathons, mobile homes, photo studios, and a whole lot more. You can find this project on Kickstarter.