Even more amazing than the Undry was his magical harp. It was among the Dagda's most cherished possessions, hewn of oak and encrusted with jewels and gold. The harp held exquisite, commanding music. Simply by plucking its strings, the Dagda could create many wonders. He could put the seasons in order; when it was time to fight his enemies, the Dagda plucked the strings of that harp and every warrior was instantly ready for battle, prepared to defend their people.
The Thor's Hammer or Hammer of Thor is an ancient Norse symbol. In Norse mythology, Thor is the god of thunder and his hammer (called Mjölnir) has the power of lightning. During the era of Viking ascendancy, miniature Thor's Hammers were often used as religious amulets. Today, the Hammer is a major symbol for those who follow neo-Norse religions such as Asatru.