I've lost plenty of camera accessories over the years, surely amounting to hundreds of dollars worth of lens caps, hoods, cable releases, etc. Sometimes I accidentally leave them on location, especially when I'm out in the dark. Other times the gear simply gets mixed up when I'm shooting with friends (interestingly, I never seem to end up with their stuff in my bag!!).
I finally smartened up a while ago and bought a label maker from an office supply store for about $40. I spit out dozens of labels with my website address and stuck them on every piece of gear I own. It's a cheap insurance policy that pays for itself quickly!
