This looks like a fun project. I think it works so well, or at least, seams to in the video because LEDs are so damn efficient.
I would make it somewhat differently, but this is good. For one thing, I'd probably make it out of an LED flashlight, swapping out the batteries for a motor.
And then, when you have your flashlight ready, you can do this!
(Hat tip: David Cassatt)
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