You hear horror stories about folks getting bits of gear nicked, in some cases entire van-loads. I myself was deprived of everything except my bass and amp many years ago by some lightfingered scumbag. So just in case, I have for some time been keeping a continually-updated Word document list of all my items of musical equipment worth over £50. There's a tabulated list of everything, with full descriptions and serial numbers and distinguishing features etc., plus some pages of photos. An example photo page is below, again with attention drawn to serial numbers and distinguishing marks. It takes a bit of time and care putting it together, but I think it's worth it because you never know.
Does anyone else do anything like this, or am I alone in my paranoia?