Singing magnets

Singing magnets are magnets that make a peculiar sound when they crash together under magnetic attraction.  They are ovoid magnets can be bought in novelty stores and eBay for less than $10.  Also known as rattlesnake or buzz magnets. They might make an interesting amusement as a present for the geek in your life.
“Continue reading” for a video and slo-mo effect and how to throw them. Plus links…
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