local historical archeaology projects are looking for volunteers

Funny you should mention that. I am a member of FOAS (The Falls of the Ohio Archeology Society) http://www.falls-society.org/ and we have had some opportunities for digging, washing and marking of artifacts. I have labeled artifacts in the past, but I haven't managed to make the time for the other stuff yet. Before Caesar's Indiana (a "riverboat" gambling casino near here) was built they did some excavation and found a lot of Woodland sites.