Seed bombing and Canning swaps

Came across two neat ideas that have definitely found their time.

The newest weapon of the guerilla gardener: making a seed bomb for hard to reach places:
http://www.guardian.co.uk/environment/video/2008/apr/25/seedbombing

Want to keep it local but add some diversity? This is one type of party you'll want to go to: the canning swap party.
http://www.foodroutes.org/ffarticle.jsp?id=13