He did help Cinderella in the following ways:
* Finding materials: Gus was often seen scavenging for materials Cinderella needed to make her dress, like buttons and scraps of fabric.
* Distracting the stepmother: Gus, along with Jaq, would distract Cinderella's stepmother and stepsisters by causing chaos and leading them on a wild goose chase.
While he wasn't carrying things directly, Gus's contributions were crucial to Cinderella's success!