Pen-Fan? Fan-Pen?

Or hot-flash deflector, or optical-illusion demonstration device. Or toy. Yes, to all of the above. Our 5-1/2" long brushed-aluminum, black-ink ballpoint pen has a (removable) little plastic fan blade in its noggin. Cool off at work, blow crumbs off the desk, or just turn it on and move the fan in and out from your computer screen and watch the phantom blades slow, stop or even reverse in the optical illusion called the "wagon wheel effect." Runs on a button-cell battery, included.