I have a collectors gene, and I always keep and save way too much. Be it with real stuff or files and.. posts. For each steemit post I create a folder (which I then keep) with the images. After I'm finished writing my post in the editor, I save it all as a text file, which then also contains the links to the uploaded pictures... and sometimes I forget to do it ;-)

Will be interesting, what kinds of treasure hunts will go on on the web in the future!