I’ve got some standing orders of 1 or 2 euros every month for bigger projects like grapheneos and kde. And for small apps that I actively use, I try to donate 5 or 10 euros now and then. It’s not much but I believe if everyone is doing their part we succeed in the long run
I second everyone donating a little would keep their favorite projects healthy. As a guy I follow says, the small donation is the one that didn’t come.
Also answering your question, I usually pay the minimum tier to not get stretched thin and go broke. 🥲