Silver / Pewter Cassette Charms. The pieces are available in brass and each piece is 35 cents. They are small, adorable, highly detailed and can be used for all kinds of DIY crafts and projects. These charms can also be used to dress up other objects like: key chains, jewelry, zippers, and other items. They are very easy to apply. This is a great way to make yourself have a unique look all your own.