A one-person event paying homage to a melting ice cube and documenting it for all to witness:
http://gdaeman.blogspot.com/2007/04/step-it-up-2007-ice-melting.html

We used April 14 as the launching day of Baltimore's newest organization, Baltimore for the Draught. We went bar hopping, with banners spreading the good word and encouraging people to drink draught beer to reduce waste.