Is This Your Luggage is a website which documents lost luggage, and its contents, through photographs. The luggage is bought through auction (after the airline diligently tries to find its rightful owner - of course), the contents are photographed, and the posted on the website. My favorite part of the site is this justification for collecting lost luggage - "It's a little odd, but not as odd as stamp collecting, just a little harder to find storage space." - Ha.
I wish I had thought of this idea.