There are numerous sailors' superstitions, such as: it is considered bad luck for a ship to set sail on a Friday, to bring anything blue aboard, to stick a knife into the deck, to leave a hatch cover upside-down, to say "pig", or to eat walnuts aboard.
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According to an age old custom, carrying a dead shrew in your pocket wards off rheumatism!
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An acorn should be carried to bring luck and ensure a long life.
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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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In Asia, the digit 4 never appears in any Nokia handset model number, because 4 is considered unlucky in many parts of Southeast/East Asia.
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A single magpie is considered a sign of bad luck. A Guide to the Scientific Knowledge of Things Familiar recites an old proverb concerning the incidence of bad weather when magpies forage alone and a possible scientific explanation for this.
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Placing keys on a table is considered unlucky. (Sweden)
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Amber beads, worn as a necklace, can protect against illness or cure colds.
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