Placing keys on a table is considered unlucky. (Sweden)
3
Two people breaking a wishbone is said to lead to good luck for the person with the larger piece.
225
Some motorcycle enthusiasts hang a biker's bell from a portion of their bike to protect themselves from evil road spirits.
64
Once a wedding ring has been placed on the finger, it is considered bad luck to remove it.
117
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
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
An acorn at the window will keep lightning out
93