The history of guerilla knitting
"Guerrilla knitting" has a couple of meanings in the knitting community - to some, it merely means knitting in public, while to others, it means creating public art by knitted means.
The artist brought a tree to Burning Man, wrote a pattern explaining how leaves should be knitted, and together with the citizens of Black Rock City knitted thousands of leaves. They were not bound off so each leaf could unravel in the wind.
The knitting machine