I designed this based on a request from my girlfriend to organizer her colorful Nail Polish bottles. It's designed to snugly fit 16 OPI bottles. The top lid is optional, in case you want to transport them or stack multiple organizers. It's kept on the right place by small pins, so it won't shift off, but isn't designed to stay clicked on. Just print! The top lid doesn't need supports. I printed it at 300 micron in PLA because it's purely functional.