Placing a hat on the bed is, apparently, bad luck. (South Carolina)
9
Before traveling a person should, apparently, sit on their luggage. (Russian)
117
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
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
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
In Asia, the digit 4 never appears in any Nokia handset model number, because 4 is considered unlucky in many parts of Southeast/East Asia.
78
According to an age old custom, carrying a dead shrew in your pocket wards off rheumatism!
24