A "Pierson's Puppeteer" from Larry Niven's "Known Space" novels and stories. Seen in progress, and then completed.
The puppeteer is made of a "Barbie"-type horse's forquarters and one of his hind legs. The rest of the body is filled out with "Crayola Model Magic" clay. The mane is brown "Fun Fur" and the necks are brown "Pleather" sleeves over a "Doll Skeleton." Wonderful flexibility there. The heads are made of the "Model Magic" again, with dolls' eyes.