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.
208
According to an age old custom, carrying a dead shrew in your pocket wards off rheumatism!
24
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
Before traveling a person should, apparently, sit on their luggage. (Russian)
117
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
In some parts of England, rum is used to wash a baby's head for good luck.
71
Breaking a mirror is said to bring bad luck for 7 years. To "undo" this, take the shards of glass and bury them underneath the moonlight. In ancient times, the mirror was said to be a window to the viewer's soul. If that mirror were to break, it would
123