In case you haven't seen it, check out the Tread Lightly! http://www.treadlightly.org/ auction. This is a creative way to show your support and get some cool gear:
I love the tread lightly concept and have (mostly) tried to follow it in the past, but there is just something inherently challenging if not hypocritical in trying to associate with the philosophy when entering the back country with a 10,000lb vehicle....