NFTs as a mechanism for exchanging and authenticating contracts is pretty revolutionary. But the only thing that reached public awareness were the dumb NFTs of a single image. The closest breakout was probably the effort for ticket sales and club memberships -- your "ticket" is the NFT itself, and you can move it around (sell, exchange) as you want before the event. There are still human-errors/logistical problems but in the end whomever has the NFT gets the seat. For club memberships, you were a member as long as you held the NFT. If you wanted out, you could sell it to someone else that wanted to join the club.
I could imagine all kinds of interesting use cases. But everything is just dumb about it now. Oh well.