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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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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An acorn should be carried to bring luck and ensure a long life.
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Before traveling a person should, apparently, sit on their luggage. (Russian)
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In some parts of England, rum is used to wash a baby's head for good luck.
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It's bad luck to leave a house through a different door than the one used to come into it.
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If you catch a falling leaf on the first day of autumn you will not catch a cold all winter.
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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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