Placing a hat on the bed is, apparently, bad luck. (South Carolina)
9
Opening an umbrella indoors is said to result in 21 days of bad luck. Some traditions hold that it is only bad luck if the umbrella is placed over the head of someone while indoors.
75
Some motorcycle enthusiasts hang a biker's bell from a portion of their bike to protect themselves from evil road spirits.
64
Placing keys on a table is considered unlucky. (Sweden)
3
Two people breaking a wishbone is said to lead to good luck for the person with the larger piece.
225
If you catch a falling leaf on the first day of autumn you will not catch a cold all winter.
394
Pirates believed that piercing the ears with such precious metals as silver and gold improved one's eyesight.
131
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.
78