Intro: Mini 'Joule Thief'
Well, it isn't really 'mini' because the small toroids I wound didn't work :/ I used a 2n3904 Transistor since that was all I had.
I included a Lego guy comparison to size. Hope you like it!
http://rustybolt.info/wordpress/?p=499 <-- More info on the coil for making a joule thief