This full moon, get a piece of black string that is three feet long. Place a bowl of water on the ground or on a windowsill. If possible, try to catch the reflection of the moon on the water. If this isn't possible, visualize the energy of the moon engulfing the water. The water is the energy of the moon in physical form. Place the string in the water until it is saturated.

Remove the wet string and tie thirteen knots in it. This binds the protective power of the moon within the string. Leave the string out overnight to dry.

Loop or tie the string to something in a place where you wish to bring protection. This could be around your steering wheel (in a way that won't hinder it, of course), around a doorknob to a room, or even around a special object you wish to protect. Remove the string at the end of the moon cycle.