Dig It Day Dawns Cold and Clear
The history of old time music frequently includes accompanying, or following, community work events -- or "workings" as they were sometimes called. I suspect the adults and children planting and mulching trees were working harder than we were, but we all sure had a good time.
If you want to explore volunteering with the Nature Consortium folks, they are always eager and ready to accept your efforts. Check out their projects at their website: http://www.naturec.org.