I like the concept of Mana - https://medium.com/luminasticity/art-as-a-tool-for-storing-m... (the link might not be to your taste as it is sort of criticism but written in a fictional universe)

"One of the primary properties of anything with Mana is a feeling of uniqueness. That one has never encountered something like this before, and therefore it is important. The uniqueness of the thing is a property that pulls you in to focus more closely, to attempt to understand more closely why the thing is unique."