The paper/dollar object is now not fungible, and is a token. ;-)
I real NFT is the same thing, but with a tiny bit of cryptocurrency instead of the US dollar.
[Edit] - A did it, and made a blog post about it - https://mikewarot.blogspot.com/2022/01/whats-all-this-nft-st...
Why anyone would pay for an NFT of a digital photo is beyond me. It conveys no actual value other that the small chunk of Ethereum, bitcoin, whatever, it is anchored to.