A "Cola bottle cap" necklace brings you closer to Coca-Cola.

https://lorvell.com/en/blogs/%E9%A6%AC%E7%99%BB%E9%80%B1%E6%8E%A8%E8%96%A6/%E4%B8%80%E6%A2%9D-%E5%8F%AF%E6%A8%82%E7%93%B6%E8%93%8B-%E9%A0%85%E9%8F%88-%E8%B5%B0%E8%BF%91coca-cola