Redditor jareyjareyjareyjarey took seven or eight activated glow sticks and attached them to the blades of a ceiling fan. Then he photographed it in motion, leaving the aperture open about 30 seconds. Others warn that you should try to even out the number of glow sticks on each blade, to keep it from going out of balance. It kind of looks like the rings of Saturn, doesn't it?
Then danimal1010 posted a picture of a similar project he'd done earlier. He had used LEDs.
CGxCOMMANDER posted a picture of his fan.
Then in order to one-up everyone, dbzcas posted a picture of his ceiling fan with LEDs, which must have required some consideration in the placement of the lights.
Now, keep in mind that when you buy glow sticks, you don't know how strong they are, or how easy it might be for one to break open while being flung about on a ceiling fan, or how easy they may be flung off only to hit the wall hard. The results may require painting a room. LEDs seem like the safer alternative.