I have to admit that I don't. I have done a couple of one-off donations before but I generally hope that my karma is balanced by some of the effort I put into helping out with a couple of projects.

That said, I've been utterly floored as to how generous the community has been with donating to one project I help with in particular. We added a donation platform with OpenCollective early on in the project but kind of hid the link away a little in the navbar, I thought we might get a tiny bit thrown at us every so often. When Distrotube did a video on us, one of the comments he made is that we should make the Donate button much more obvious, we did and now we have a whole bunch of super generous sponsors backing the project and making it possible. We keep the spending as open as we possibly can - it mostly goes into our backend hosting costs and website stuff and really does help it all stay alive.