After seeing the cost for his CT scan, Phil Jansen decided it was time to try to build an open-source desktop CT scanner for small objects, and to do it for much less than the cost of a single scan. Read his story in this article from MAKE Volume 38: http://bit.ly/1eGilwW
This stick is no stooge. It has the brains of a puck, and most of the brawn. But because it's a stick, it's cheaper and simpler, and therefore a great option for people new to the whole puck-and-stick game.