I just saw a local folk/pop trio performing, and one of them was using a fairly inexpensive head mounted mic -- he told me it was about $85 US.
It sounded pretty darn good, and certainly freed him up to move his head as he played dobro. It also did away with a cumbersome mic stand in a very small coffe house space.
Have any of you experimented with these ? I know there must be some Britanny Spears wannabes out there !?!