I pick small ones over large ones like you listed, and make a not too small donation, like $50 or $100. I feel that this can give a considerable boost to someo

I pick small ones over large ones like you listed, and make a not too small donation, like $50 or $100. I feel that this can give a considerable boost to someone's motivation, while it is a small drop in the bucket for established organizations and projects. It will not "go to waste" with larger ones, but it will not feel as personal as a (typically) single maintainer getting donations -- which they do get rarely. Go through your list of browser or mail client extensions, for example!