It's bad luck to leave a house through a different door than the one used to come into it.
143
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.
105
An acorn should be carried to bring luck and ensure a long life.
115
If you catch a falling leaf on the first day of autumn you will not catch a cold all winter.
394
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
Before traveling a person should, apparently, sit on their luggage. (Russian)
117
An acorn at the window will keep lightning out
93
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