Cathy, you don't have to have a new set each time. For one thing, swappers change. The people in this swap are not necessarily the same ones as the last swap. Then, there are people who use duplicates. Those can be used for crafts like Lisa (Moonrise) does. There is also an I spy quilt that uses duplicates, which generally is just called a "matching game". The kid has to find the squares that match. Younger kids can use the one with exact duplicate charms. The older kids probably should have a matching game where there are, say, two dog charms or two butterfly charms, but they aren't exact duplicates. Then there are others who make donation quilts, so they can just use that charm on another quilt. Then, there are the swappers who just like to swap I spy charms. Just one more of a certain fabric won't bother them one way or another.
So, please join if you would enjoy it.
bkay