You may donate to Wau Holland, who take bitcoins for gnupg.

Stripe announced a long time ago that they will support bitcoins and they seem to have a closed Beta for this. However it has still not gone live. I try to avoid working with yet another payment provider just for converting bitcoins to Euros. For bookkeeping it is much easier not to take care of assets with large fluctuation. [wk@gnupg.org]