Do you know about any USEFUL web3/blockchain projects? I fail to find any...

I've been around blockchain and decentralized systems since early 2016. Professionally and in my spare time, and I have never found any project I could say: "Yes, this is useful and could not be done without this tech" or "This tech makes the project that much better"...

So, my question today is, do you know of any web3 or blockchain project that you would say it's useful and could only be done with this tech, or at least it adds value?