Paul Villinski creates these awesome butterfly works out of crushed beer cans from the streets of New York. 

"I am drawn to humble, yet evocative materials; in this case, crushed beer cans from the streets of New York - every one of them once raised to someone’s lips. My process of “recycling” them into images of butterflies is a quiet physical meditation, a yoga of tin snips and files and fingers."

Read more about his beautiful butterfly art at Paul's website. You might also like this Metal Sculpture by David Kracov or this Hummingbird CD Sculpture by Sean Avery.

Yong Ho Ji is a Korean artist who creates wonderful and unique sculptures out of recycled tires. You can see the meticulous details of the muscles, flesh, and curved bodies of his beasts.