My attempt to sell off boxes of 30-year-old+ comics was an abject failure. The market is flooded, the internet is taking over the comic space, etc. etc. Especially disheartening was that I couldn’t find a good home for all my old Mad magazines. Thumbing through the boxes a few months ago, had to take time out to do a bunch of Mad Fold-Ins — the back page was always a treat, and every issue has vertical creases at the 1/3 points. Creator Al Jaffe (now 86) has been creating the fold-ins by hand almost non-stop since 1964.
The New York Times is featuring an excellent collection of fold-ins, with interactivity expertly re-created in Flash.