My wife and I were diving in Cozumel, and after our last dive, we packed everything up, put in our mesh bags, and carted it back to the hotel. At the hotel, we couldn't find here Aeris wrist-mount computer as I was repacking everything into our travel bags. We looked everywhere, called the dive shop and asked them if they had one turned in, but to no avail. It was brand new, and these were the first dives for her on it, so needless to say, it was special (her prior computer had been my hand-me-down Cobra when I "upgraded" to a Cobra 2).
She was distraught, and as soon as we landed and got home, I was on-line with Leisure Pro and had one in the mail to us the next day. Since we got back on a Sunday, I didn't have a chance to clean the gear until the following Saturday. While cleaning her fins, I slipped my hand into the foot pocket of one of them and, lo and behold, there resided an Aeris wrist mount computer.
Leisure Pro was good enough to take the un-opened one back, without question. Since that time, we have gone out of our way to ensure that when we stow a piece of dive gear, we disclose to the other just exactly where we put whatever it is.
On the find side, I brought back a weight pocket after a dive once that just coincidently matched her BC pockets perfectly, so instant, free, spare. We gave the weight to the dive shop we were diving with. I assume that somewhere out there, someone else need a pocket?
And on the topic of lanyards, even though I have an entry level Olympus camera and housing, it is always attached to a coiled lanyard whenever I hit the water. I notice a lot of divers with more expensive cameras don't do that, but even as inexpensive as my "rig" is, I don't think I could afford to lose it.
Sam - I feel for you!