How does Winnie's "special" help them at the carnival?

Winnie's "special" ability to turn one nickel into 50 plays a crucial role at the carnival by demonstrating her unique skills that offer significant help to her friends. This particular ability not only showcases her resourcefulness but also highlights a key theme in the story about the importance of utilizing one's gifts for the benefit of others. By multiplying the nickel, she effectively enhances their chances to play games and win prizes, ultimately contributing to the fun and excitement of the carnival experience. This transformation of a single coin into a larger amount underscores the impact of her talents on the group's adventures and their ability to enjoy the festivities to the fullest.