In December 2000, I went to WDW with my newly divorced daughter, and my then 9-year-old granddaughter. The main thing we collected that trip were photos and autographs for my granddaughter.
My last trip to WDW was in December 2005, with the same daughter, soon-to-be new son-in-law, and then 14-year-old granddaughter. I bought a stock of pins for trading, but didn't know if everyone in the family would get into it. Boy, did they! I think it was one of the highlights of our trip.
We still have 3 days left on our 7-day passes, so we'll be going back sometime in the next couple of years. I've started buying some new traders for whenever that happens. (Daughter was out of work for a year, and just went back a month ago, so it will be a while before we can afford another Disney vacation.)