Will's list from his recent post has good candidates too:
Taking uni organizing really seriously was upstream of MATS, EA Courses/Virtual Programs, and BlueDot (shoutout to Dewi) getting started among other things. IMO this work is extremely valuable and heavily under-prioritized in the community compared to research. Group organizing can be quite helpful for training communications skills, entrepreneurship, agency, grit, improved intuitions about theories of change, management, networking/providing value to other people, general organization/ability to get things done, and many other flexible skills that from personal experience can significantly increase your impact.
I am really grateful for your courage, and for making it easier for others to speak up about the mistakes senior people in our community are making. I think the world would benefit a ton from more courage from the EA community for many reasons. Thank you for setting such a positive example.