>I heard of someone using a laser pointer, some cheap speakers
>and a few 1cm mirror tiles to build a "random laser dot" thing.
>Every time the thing got turned on, the cats would (allegedly)
>start pawing at the laser dot...

I have seen one of ours do this to a spot of sunlight on the floor, when
something caused it to move. I think it might have been a reflection off a
watch face or something similar.

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