A Washington tradition for 26 years, “The Nutcracker” is the story of Clara-Marie’s favorite toy, and their adventures together in the Land of the Sugerplum Fairy. Music from Tchaikovsky’s famous ballet blends with marionettes and costume characters to create this unique production. On stage at Glen Echo, through Dec. 31. This show is recommended for ages 5, up. Running time is 45 minutes. Tickets are $12. thepuppetco.org.