Two people breaking a wishbone is said to lead to good luck for the person with the larger piece.
225
Placing a hat on the bed is, apparently, bad luck. (South Carolina)
9
Once a wedding ring has been placed on the finger, it is considered bad luck to remove it.
117
If you catch a falling leaf on the first day of autumn you will not catch a cold all winter.
394
Many believe that if all of the candles on a birthday cake are blown out with one breath, while making a silent wish, the wish will come true.
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Placing keys on a table is considered unlucky. (Sweden)
3
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.
78
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.
70