Not a new idea, but I thought I'd attempt my version of a photograph I've seen in other venues.. Wife and dogs were totally mystified during my setup. Attached thread to smoke alarm on ceiling.... dropped down about 3', attached the butt end of a mini-mag light - Pointy, shiny end facing floor.. Taped a small piece of construction paper that had a couple of "PushPin" holes poked into it, to the pointy, shiny end, and turned the Mag light on... Set the camera - Canon 450D, 100 ISO, f/20, 33mm, 'bulb' mode.... on the floor, facing up, towards the mag light.. Spun the mag light in a circle... Turned off the lights and fired up the camera... Exposures varied, mostly about 1.5 - 3 minutes, and ended up with many failures, of which these were the exceptions.. The different colors were done with different colored construction paper.. The white had black paper, so you only see the light thru the pinholes, and the red was done with a piece of red paper.. Not sure what they're good for, but I shot the heck out of, what would have normally been, a very boreing evening..