According to an age old custom, carrying a dead shrew in your pocket wards off rheumatism!
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Placing keys on a table is considered unlucky. (Sweden)
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Once a wedding ring has been placed on the finger, it is considered bad luck to remove it.
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When you speak of bad luck, it is said that one should always knock on wood. Also knocking when speaking of good luck apparently helps with having good luck. This is an old Celtic tradition related to belief of wood spirits.
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Pirates believed that piercing the ears with such precious metals as silver and gold improved one's eyesight.
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An acorn at the window will keep lightning out
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Amber beads, worn as a necklace, can protect against illness or cure colds.
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Before traveling a person should, apparently, sit on their luggage. (Russian)
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