If you hang a few berries or some powdered leaves of Mistletoe in a sachet over your entrance, no negative influence will pass through that door. The renewed sachet is placed there every year between Christmas and New Year.
Mistletoe has been used as a good luck charm since ever. The Celt hung it over their doors and even around their neck as a protection. The Mistletoe from Oak trees are the most effective one for magic recipes. It was believed by the ancient that the soul of the Oak tree entered into the Mistletoe during Winter, concentrating all the magical virtues of the Forest King into the Mistletoe.