As said before, it looks like I have actually convinced the german privacy foundation to accept donations using bitcoins.
Can someone verify they are currently not doing so?
I confirm that (but apparently they also accept cash). Also, for convenience of fellow non-German speakers who would also like to take a look, here's the
Google Translate link.
Seems like they have a subsection called "anonymous donation" encouraging people to send cash by mail. Bitcoin would fit in that section I would imagine? Ideally if they put Bitcoin in both - anonymous and "mainstream".