The objective in my ceramics class last semester was to make a working whistle. I made a German Shepherd whistle.
It looks deformed, but let me tell you, it was very difficult to form. I had to make my own whistle out of clay as well. The GSD is built around the whistle, the mouth piece is protruding from under the tail (a bit humorous, I suppose).
This photo was taken a while ago, I am almost finished glazing it now. It's supposed to be a "rich" bi-color. I'll post a photo after it's been fired.