Did you know that you can power a television with a single 'AAA' battery? Well, This video shows how to do it with only three parts needed. and yes, I am not a hamster, I'm fully aware that it wouldn't last long because a battery this size can't hold very much power.
I also have to note that the set used in the video is, of course, a standard modern set. I DARE you to make this work with an old tube type set from say, 1970 or earlier.