I purchased a few charm sets for all my kids, myself, a few others, and some extras for parts. At around 1$ or less a set after sales and coupons its to hard to pass up!
I used the clasp parts of the charms to make more unique ones for my daughters and I. I found the carousel one on a family walk up north. I made four heart ones out of an old necklace of mine. I can easily turn the extra charm parts I took off into matching charm necklaces or earrings for my kids.
I love how easy it can be to customize sets and make them a little more unique and more personal!