I am also interested in that. I'm interested if you are trying to solve a single problem or whether you are trying to do something more general.
I'm focusing on something highly specific right now: a dirty, hack-riddled attempt at turning python into a usable live-programming environment. This is a far cry from my general interest of building an OS ( or "operating environment" ) which effectively has a reflective understanding of its own internals, programming language and operations.
This splits into many sub-problems; so the one I'm primarily fascinated by is how to construct a programming language that a computer not only can execute but understands the semantics of in various dimension...
As an experiment, here's a thread for people to post about things they care about. Specifically, for things that are possible to contribute to, in some way, and preferably, to invite others to join.
Mine is buying and donating highschool textbooks to schools in the 'grey zone' of Ukraine (where the war kinda isn't fought, but few people would be surprised if it started.) I don't deliver them myself, though.
What's yours?