I'm chuckling at myself right now – and I'm not sure if it's because I would be going everywhere playing David Carruso with this light gadget, or if it's because it even popped up at all. The MicroBlue Forensic Evidence Detector Kit is a UV pen light and amber shield that detects traces of blood, urine, saliva… and other pure unpleasantries that could have been left behind. As Dave Chappelle says, "do you find semen at a crime scene, or do you look for it?"
and for your enjoyment, a video of David Carrusso one-liners:
Gross yourself out with the MicroBlue Forensic Evidence Detector light here.