All of this moved over to Ethereum long ago but those outside of the crypto space might not know that. Thousands of hackers have created little neat experiments and projects for others to use and build on and more are released everyday.
Some of my favorites are https://dontbuymeme.com/, https://aavegotchi.com/, and https://quadraticvote.co/. There's too many to list (like the internet itself) but a lot of communities for specialized topics have formed such as art people flocking to NFTs, meme lovers creating self funding and self organized communities, and lots of cool governance tools for voting and organizations like https://daohaus.club/, https://colony.io/, and https://aragon.org/.
It really does feel like the early internet and I can barely keep up with all of the cool stuff being shipped.