Once a wedding ring has been placed on the finger, it is considered bad luck to remove it.
117
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
Placing a hat on the bed is, apparently, bad luck. (South Carolina)
9
Placing keys on a table is considered unlucky. (Sweden)
3
Collect seven or nine different flowers on midsummer eve and place them under your pillow and it is said that you will dream of your future spouse. (Sweden)
463
An acorn should be carried to bring luck and ensure a long life.
115
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
In some parts of England, rum is used to wash a baby's head for good luck.
71