I joined a trade union, we're always doing lots of really valuable work, helping people who need help. I'm the union's IT officer now, daily work is just managing email lists and arguing with MS 365, ongoing projects are updating our website and dues payment system. Doing this work helps our activists, organisers, and retained lawyers do their extremely valuable work. I'm not paid, I do it in spare time around an unrelated full-time job. I feel good about it. If you've got any useful skills, or just some free time, you can support anyone you see out in the world doing good.