Looking at things from a different perspective is the best way to find the strange, singular or quirky aspects that will make readers sit up and take notice. One way is to stop thinking like a human being. How? Try this exercise and see where it takes you.
You are a grocery shopping cart. A group of three people shopping together (you choose who they are) take you into the store. If you could talk, what would you say about these three people and the items they choose to buy? Give yourself 10 minutes to comment on these three people, their lives and their purchases.
What did your shopping cart have to say?