Dream Catcher

This is a dream catcher used by the Native Americans of the Eastern Woods. Here's how it works:
 
You make a circle like shown out of animal skin with some strings in a pattern in the middle, then you leave it outside your door. This device is supposed to catch evil spirits which are basically the same as bad dreams. Each pearl represents a bad spirit caught.
The Dream Catchers can be decorated as well, with mostly feathers. I added horns of a buffalo on mine.