What if you had a page on your website where you had a map of your town. Then you had images on it you could click to see the good deeds you did in town. Maybe even have some video of the project you did. Tell the viewer who you helped and what you did. Show before and after.
This could be done with pictures too but video would really push it over the top.
Maybe you could get the local paper involved to get some local community members to take part in your cleanups as well!
You could notify volunteers of you upcoming projects and let them know when and where to show up to help. I bet you could get items donated as well for the projects. Like fixing a ball field or anything else.
Here is an example I put together for my friend Pete. If you want to discuss this, please visit the Gopher Lawn Care Business forum post here.