Hopi Kachina dolls are effigies made of cottonwood that embody the characteristics of the ceremonial Kachina, the masked spirits of the Hopi Native American tribe. Kachina dolls are objects meant to be treasured and studied in order to learn the characteristics of each Kachina. Inuit dolls are made out of soapstone and bone, materials common to the Inuit people. Many are clothed with animal fur or skin. Their clothing articulates the traditional style of dress necessary to survive cold winters, wind, and snow. The tea dolls of the Innu people were filled with tea for young girls to carry on long journeys. Apple dolls are traditional North American dolls with a head made from dried apples. In Inca mythology, Sara Mama was the goddess of grain. She was associated with maize that grew in multiples or was similarly strange. These strange plants were sometimes dressed as dolls of Sara Mama. Corn husk dolls are traditional Native American dolls made out of the dried leaves or husk of a corncob. Traditionally, they do not have a face. The making of corn husk dolls was adopted by early European settlers in the United States. Early settlers also made rag dolls and carved wooden dolls, called "Pennywoods". La última muñeca, or "the last doll", is a tradition of the "Quinceañera", the celebration of a girl's fifteenth birthday in parts of Latin America. During this ritual the "quinceañera" relinquishes a doll from her childhood to signify that she is no longer in need of such a toy. In the United States, dollmaking became an industry in the 1860s, after the Civil War.