You want to hype Germany vs. USA? If you're a supermarket, why not do it with fruits and vegetables?
German supermarket Rewe did just that. Peppers were rearranged to make the German flag, while tomatoes and garlic were used to create the stripes of the American flag.
The design was so novel that the German national football team tweeted the image from their official account.
The only problem is that if customers go in and buy any of the produce, it will ruin the design.