The purpose of this question is not clear. Are there criteria for what object? What is the point of the objects?
I assume that the point of it is to pick an object that helps you understand the story, but you don't say if that's so. I'll answer based on that. Some ideas:
- Gloria Dump's tree. It sees Gloria and presumably knows her secrets. It sees Opal and Gloria build a relationship. It sees the party where Opal and all her acquaintences get to understand one another better.
- Otis's guitar. It gets to see what things Otis can do musically and it presumably understands Otis and some of the issues he has.
- The vegetables at the Winn-Dixie. They are there for the beginning of the Opal-Winn-Dixie relationship.
Those are some objects I can imagine using, but without more information about your needs, I can't give you a better answer...
In the book Because of Winn Dixie Opal struggles to hold onto the few things her father has shared with her about her mother. She needs her father’s attention but he is always preoccupied with his work. The other members in the community each hold on to different things. Gloria hangs her whiskey bottles on a tree to remind herself of things she has done wrong. The others each hold tight to the thing that they fear losing. Since Opal, has learned to trust Winn Dixie, the dog, I would make my object a dog collar. When Winn Dixie came into her life Opal did not know a dog would help her to fill the empty voids in her life. In the story Opal also learns how valuable her relationship is with Winn Dixie when she can not find the dog. An empty dog collar could symbolize them both. The empty collar is a symbol of being alone.