I'll post the rules as soon as I find out if there is an alternative to priority mail. The rules say the package you send has to be "trackable". I was going to check with the post office to see if there is any other mail that can be tracked. I haven't gotten it done, but my P.O. is open tomorrow.
Basically, the charm has to be exactly 5" X 5", it must contain a whole (complete) recognizable object (or complete multiple recognizable objects), it must be 100% quilt quality cotton. If I remember correctly, flowers are not allowed. I'm looking through some of mine, because I'm sure I will leave something out, but t can be an animal, a tree, a boat, a rocket, a food, an insect, flip flops, cars, socks, a bicycle,a safety pin, a fish, a ball, a balloon - it can be anything a child would recognize.
The fabric has to be washed, by the way.
bkay