A post entitled "Found Camera in Maui: Let's try to get it back to this nice looking family, Reddit," has 340 comments and counting, and while it doesn't appear that the owners have been located yet, I did pick up a great tip on how you can increase your chances of getting your camera back if you lose it. According to one brainy commenter:
Write your name, email, and phone number on a card and photograph that card. Never delete that photo from your camera. If your camera is lost and found by someone kind, he'll have your info. If the camera has internal memory, get a photo on both the memory card and the internal memory.
Pretty smart, huh? I would add that you should "lock" the photo, so it's undeletable. Most cameras can do that, I reckon. That way you can still use the "delete all" feature after you've uploaded everything, because deleting photos individually is too much work. (A low-tech solution: slap a little label on it with your email address and/or phone number.)
As for the owners, they do seem like a nice family, and good for them for not letting a baby keep them from traveling. I'm sure the little munchkin enjoyed the trip, even if she (?) won't remember anything. Here's hoping they can be reunited with their camera so that they can have mementos of their trip, and the internet can have some closure.