Which toy story characters appear on disney world souvenirs?

The available sources identify the main characters of the Toy Story franchise, notably Sheriff Woody and Buzz Lightyear, as central figures in the series. However, there is no documented information in these sources indicating any specific characters that are featured on Disney World souvenirs. Consequently, based solely on the verified evidence, we cannot confirm which Toy Story characters are represented on Disney World merchandise. For definitive details, one would need to consult Disney's official souvenir catalogs or the Disney World website.