If you've collected charms over the years and want to display them in a modern way, consider a charm holder, available in a few different styles.
This 14K yellow gold and white cubic zirconia oval lock clasp is 20x10mm.
Wear it on its own as a connector on a paperclip necklace (very "of the moment"), or stack it with charms. Either way, you're going to get a lot of compliments!