What are the main themes of the toy story movies?

The evidence supplied only identifies key individuals and characters associated with the Toy Story franchise. It lists Woody, a pull‑string cowboy doll voiced by Tom Hanks, and notes that Woody was created by directors and writers John Lasseter, Andrew Stanton, Pete Docter, and Joe Ranft. The excerpt also mentions Woody’s design origin and the franchise itself. No description of thematic content, narrative motifs, or underlying messages is present in the text. Consequently, based solely on the provided sources, the main themes of the Toy Story movies cannot be determined. Further research or additional sources would be required to identify themes such as friendship, loyalty, or identity that are often discussed in broader analyses of the series.