I thought this site I just signed up for may be useful to people on this forum.
It's called Lenstag (so obviously originally thought of for photogs/video people, but I think applicable to all production gear).
I haven't gone through and registered all my gear yet, but I like how it has the options to report gear stolen by serial number & to "verify" gear by taking a picture of the serial on your gear and uploading it.
Thought you all may dig it.