Placing a hat on the bed is, apparently, bad luck. (South Carolina)
The superstitious symbolism of a black cat crossing one's path is dependent upon culture: some cultures consider this a sign of impending bad luck, while some cultures consider this a sign of impending good luck.
An acorn should be carried to bring luck and ensure a long life.
Amber beads, worn as a necklace, can protect against illness or cure colds.
Once a wedding ring has been placed on the finger, it is considered bad luck to remove it.
In some parts of England, rum is used to wash a baby's head for good luck.
If one walks underneath an open ladder it is said to bring bad luck. Sometimes it is said that this can be undone by immediately walking backwards back underneath the ladder.
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.