If you search trough the forum you will find a number of different pins. There was a post just a few days ago that showed a Knife, Fork and Spoon that had been made into kilt pins. I often wear the Unit Crest from the US Army regiment I was in as a kilt pin.

As is often said a kilt is clothing not a uniform (unless you are in the military) just use some taste in what you use.

Welcome to the group.