Can someone help me on my diorama about "Because of Winn-Dixie"?

I am doing a diorama of "Because of Winn-Dixie"and I need help.The scene I am doing is when Opal (the 10 year old girl and the main character) is at the grocery store and Winn-Dixie (the dog and also the main character) is siting on the manager (the owner of the grocery store).I need help of what to put in the diorama ASAP.