I donate a bunch of things on Marketplace (mostly baby/kids’ clothes and toys the kids outgrew). I also give to the local food banks and food drives whenever I can and think about it. If you’re specifically asking about money, I give to, and last summer fundraised for, Muscular Dystrophy Canada.
From experience shipping releases, “bigger updates” and “more tested” are more or less antithetical. The testing surface area tends to grow exponentially with the amount of features you ship with a given release, to the point I tend to see small, regular releases, as a better sign of stability.