For my faceOSC project I created a bubble wand that you control using your face. The center of the wand is mapped to the center of your face so it fill follow the path your face moves in. To blow a bubble you move your mouth the same way you would to blow a bubble using a physical bubble wand. The longer you blow, the bigger the bubble will get. When you relax your mouth, the bubble is released from the wand and will float freely. There are three wands each with a different shape (circle, flower, and star). You can switch between the wands by raising your eye brows.
Below is a video demonstrating and explaining my project. You can download the source code here.