I don't know if this is helpful, but I have a friend who is essentially unmedicated. She takes a drug store lithium supplement and says that is helpful. However I do know she has been hospitalized recently, so I guess it is living on the edge a little. She doesn't go to a pdoc or t though, so she isn't doing everything you can do if unmedicated. But she gets by. She's actually in nursing school now, and doing well.
I myself am a little afraid of going unmedicated, because I feel a little out of control when I'm not on anything.