I found this CCFL test unit while I was looking at other CCFL drivers on ebay. It was sleeved in heatshrink sleeving with a 12V connection at one side and a connector at the other for either a pair of croc clips or a connector that I didn't recognise.
Inside is a fairly typical tube driver with the main difference being that the 33pF output capacitor has a surface mount 100pF one soldered across it for a total value of 133pF. This allows a much higher current through the connected tube, so it makes it quite useful for driving decorative neon ornaments.