This lovely Flickr set has hundreds of pictures of bottlecaps, collected from all over the world.
(Thanks, Jason.)
Related posts:
A Bird (JazJaz Flickr Pool)
Гелла (JazJaz Flickr Pool)
Interesting Submissions to the JazJaz Flickr Pool
Tears Are the Melting of the Ice of the Soul (JazJaz Flickr Pool)
Surreal Photo Series Depicts Animals Indulging in Drunkenly Human-Like Behavior
Double Exposure Photo Project Combines Human Bodies in Yoga Postures With Plant Life Structures
Stunning Unrecognizable Macro Photographs of Everyday Objects