#20: Fushigi Magic Gravity Ball (2010)
This reflective ball was sold like a magic orb, when it was just an optical illusion. The secret is contact juggling, which is more complicated than it looked in the ads. The ads made it look easy to pick up and that you could do all sorts of tricks with it, like it was the next yo-yo. Instead, it became a magic gravity paperweight for many who bought it.

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