What's your favorite project in Ethereum outside of the obviously popular ones (like EigenLayer, the various L2's)?

Ethereum Attestation Service: 
https://attest.sh/

'Open Source, permissionless and token free'. After learning about it in Optimism's RetroPGF3 I'm convinced it is going to be an ever-more important primitive in the ecosystem as time goes on, enabling use cases that POAPs and SBTs hint at but don't quite work for.

Independent Ethereum educator, angel investor and advisor. 

Founder of /thedailygwei.

EVMaverick, OP Delegate, Nethermind/Nimbus operator and general Ethereum enjoyer 

This primitive can enhance many business functions today, and as an auditor I see clear use case.

It allows people to own what is means to, 'take my word for it'.