What are Native American Dream Catchers?

Indian dream catchers are hung by windows or at the head of beds catching bad dreams in the web.  The prayer beads on the dream catcher trap all the bad dreams that are left on the web and burn them up.  The good dreams work their way through the hole in the center, rest on the dream catchers with feathers like a dew drop, and evaporate to the Great Spirit in the morning sun. The story of the navajo dream catcher varies from tribe to tribe.