Humperdink’s children’s opera is full of magic, music and dazzling special effects. The puppets, lights, music and effects are all operated by Christopher Piper, who also performs all the live vocal characterizations. On stage at Glen Echo, Oct. 4 to Nov. 16. Recommended for ages 4, up. Tickets are $12. The Nutcracker is on stage from Nov. 24 to Dec. 30. thepuppetco.org.