This little cloth bag is a amulet known as a omamori. This one is made with a light purple brocade with darker purple cherry blossoms. The front has an image of Shao in her chibi form. Inside is a paper with a prayer on it. I'm not sure if it is for good luck, for protection . . . there are lots of different omamoris! My guess is that this is for protection from the moon. ;)
Mine is a little dirty, as you can probably tell. It is second-hand and was probably used as a backpack or cell phone charm by the previous owner.
