Dance and ballet glass Christmas ornaments. Dance and ballet themed tree ornaments. On blown round balls, or molded ornaments, as well as free blown ornaments.While a few of the ornaments are mere creations of the blowers, others are based on dance and ballet images in famous painting, like Toulous Lautrec Canc Can dancer , or Renoir 's Dance in the City, Degas Ballerina in general, and Degas 14th year Old Ballerina.