From the MAKE Flickr photo pool:
Member Garagemonkeysan brought a more lovable look and feel to the popular joule thief project. The seemingly depleted battery is held in place by 2 magnets – nice technique! He’s also got a great instructable up as well.

Cat burglar joule thief on Flickr-Link
Cat burglar joule thief on Instructables –Link


Make a Joule Thief – Weekend Projects Video Podcast –Link

Joule Thief
The Joule Thief –Link