I've been a member and active volunteer of Oxfam Canada since 2001.
I've done all sorts of things as a member over the years, though mostly they've made me dress up in foolish outfits - masks, costumes, basically anything that covers my face (that's me in the Gerhard Schroder bobblehead, for example).
As part of our latest membership drive, they've got a member profile for me up on Oxfam's site - you can read it here, if you'd like.
Oh, and also as part of our latest membership drive: you should become a member of Oxfam Canada. Yes you should.