Placing keys on a table is considered unlucky. (Sweden)
3
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
It's bad luck to leave a house through a different door than the one used to come into it.
143
Before traveling a person should, apparently, sit on their luggage. (Russian)
117
Placing a hat on the bed is, apparently, bad luck. (South Carolina)
9
In some parts of England, rum is used to wash a baby's head for good luck.
71
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