Personally, I have never found a disposable camera, memory card, or any of the sorts. But one blogger has found the lost memories of others, and, of course, decided to blog about them.
I found your camera is a blog of the forever lost cherished memories of others; or orphan pictures. These photos were found on cameras and memory cards left behind. And, if that wasn’t interesting enough, many people have found their orphan pictures and were reunited with their camera. Are you in there somewhere?