Missoula Volunteer Opportunities

Anyone have a link to a mega list of volunteer opportunities in Missoula?  I've volunteered at the Missoula Food Bank and Poverello Center (I built the old shelves at the Food Bank years ago) and at a couple schools for some workshops but is there anything else out there that's a little more "green"?

I'm not a Boy Scout anymore so if I wander around offering to rake up old ladies leaves around the neighborhood I'd expect the authorities to come ask what I was doing haha.

Try http://www.volunteer.umt.edu, they seem to have lots of things listed, including some ecology minded projects, like barbwire removal in the Blackfoot.

or http://www.umt.edu/studentjobs/ and search for volunteer opportunites. 

Awesome resources there thanks!  I like to find things the older kids in my family can do and a few of those really fit the bill.