The superstitious symbolism of a black cat crossing one's path is dependent upon culture: some cultures consider this a sign of impending bad luck, while some cultures consider this a sign of impending good luck.
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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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Two people breaking a wishbone is said to lead to good luck for the person with the larger piece.
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At times, a horseshoe may be found above doorways. When positioned like a regular 'U' it supposedly collects luck. However, when it is positioned like an upside-down 'U' the luck supposedly drains.
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Placing a hat on the bed is, apparently, bad luck. (South Carolina)
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Placing keys on a table is considered unlucky. (Sweden)
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Some motorcycle enthusiasts hang a biker's bell from a portion of their bike to protect themselves from evil road spirits.
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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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