Disclaimer: I haven't done any of this myself and don't think any of these are rational investments. Most NFT marketplaces have a 'portfolio' page that display

Disclaimer: I haven't done any of this myself and don't think any of these are rational investments. Most NFT marketplaces have a 'portfolio' page that displays all of the NFTs you own. Then there are second-life style digital worlds (where you can buy virtual real estate) that some people have created NFT galleries within. Seems like Cryptovoxels and Decentraland are the two leaders in this space. There are also a handful of MMO-type games where tradable items have been turned into NFTs, so they can be traded and possessed externally to the game. Maybe some allow cross-game usage too? I'm not sure, haven't been following these that closely - there a bunch and I am too skeptical to dive into any of them.