What do you do when you're waiting for a concert to start?
Falling Stars

i *heart*

Light paint :D
Use a slow shutter of about 4 seconds, spot-meter for the spotlights, depress shutter button, then "draw" with your camera as though you're drawing on a chalkboard :D
There's another form of light painting whereby you move the light source - usually a torchlight - instead of the camera.
It's fun. At times of boredom -_-"