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Aug15

Bank that spins a coin : Spin Bank

spinbank.jpg
Drop a coin in the bank and it spins like a top. The potential energy is converted to the rotational energy efficiently with the structure of this bank.
(?/ physlink.com: $5.95)
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Device that separates and wraps coins
Tonkachi Piggy Bank
A book which makes you save 100,000yen
<- Japanese

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