This design is functionality. It added a small container in the bottle cap and you can put pills inside.Therefore when you drinking water,you will know that you need to take pills.But i think it can put other small items inside the small container.
"Honey I'm home!" key rack concept by two talented industrial design students: Malorie Pangilinan and Luz Cabrera. -- The firm keyring fob would be difficult to misplace and so easy to hang up. Love it!