Placing a hat on the bed is, apparently, bad luck. (South Carolina)
9
Many believe that if all of the candles on a birthday cake are blown out with one breath, while making a silent wish, the wish will come true.
298
Pirates believed that piercing the ears with such precious metals as silver and gold improved one's eyesight.
131
Before traveling a person should, apparently, sit on their luggage. (Russian)
117
It is bad luck to put new shoes on a bed (or a table) (comes from the tradition of dressing a corpse in new clothes and shoes and laying them out so everyone can give their respects) - (UK)
57
A single magpie is considered a sign of bad luck. A Guide to the Scientific Knowledge of Things Familiar recites an old proverb concerning the incidence of bad weather when magpies forage alone and a possible scientific explanation for this.
49
Once a wedding ring has been placed on the finger, it is considered bad luck to remove it.
117
Two people breaking a wishbone is said to lead to good luck for the person with the larger piece.
225