- Ernie was made in three sizes, from 9in to 25in
- Bert in three sizes, from 9in to 25in
- Betty Lou in two sizes, 9in and 15in
- Cookie Monster in two sizes
Knickerbocker also produced a soft car toy with 6 inch rag dolls of Ernie, Bert and Betty Lou, with rubber tires. By 1976, this toy was sold as "Ernie and Bert's Buggy", without Betty Lou.