I think the best use case for OPs question and the closest thing to a serialized piece of Bitcoin would be the rare SATs ordinals and I for one think they’re pretty cool and add some new “features” to Bitcoin that we otherwise didn’t have before. Lots of folks don’t like it though because it slowed down the network and increased transactions fees for a time and that is and has changed and is still changing and improving. I do love the idea though of very small amounts of BTC being put on let’s call them “Bitcoin Bucks” and made as a novelty and collectible for the masses.