Did you hear about the discovery scientists made involving Scotch tape? It seems that ordinary Scotch tape, the kind you use to wrap packages, when unrolled can emit enough radiation to make xrays! It seems another scientist back in the 1950s came up with the concept, but was recently proved. They placed a roll in a small vacuum chamber and with a mechanical spool, unrolled the tape at the rate of about a foot every 5 seconds which is about as fast as if you were to pull a piece off and measured the emitted radiation with a geiger counter. One of the scientist then placed a piece of dentist xray film over his finger and it took an xray of his bone! It should be noted that this must be done in a vacuum chamber so gases can't absorb the radiation before it has a chance to emit. I thought it was pretty interesting, might be a lead on how to make xray machines in the future.
Here is the story: http://www.nature.com/news/2008/081022/full/news.2008.1185.html
Be sure to watch the video.