Once a wedding ring has been placed on the finger, it is considered bad luck to remove it.
117
At times, a horseshoe may be found above doorways. When positioned like a regular 'U' it supposedly collects luck. However, when it is positioned like an upside-down 'U' the luck supposedly drains.
78
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
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
If you catch a falling leaf on the first day of autumn you will not catch a cold all winter.
394
When you speak of bad luck, it is said that one should always knock on wood. Also knocking when speaking of good luck apparently helps with having good luck. This is an old Celtic tradition related to belief of wood spirits.
208
An acorn should be carried to bring luck and ensure a long life.
115
Pirates believed that piercing the ears with such precious metals as silver and gold improved one's eyesight.
131