http://www.thisiscolossal.com/2013/05/welded-shovel-pine-cones-by-floyd-elzinga/

Welded spade heads made into giant pine cones by Floyd Elzinga (photo by Christopher Jobson.)

Eat your heart out, Marcel Duchamp.  Upon his arrival from France, Duchamp was intrigued by the shape of American snow shovels.  He bought one and treated it as readymade art – i.e. he bought one, painted the title “Prelude to a Broken Arm” on it, signed it with his name, and hung it up in his studio.

According to Wikipedia, many years later a replica of his work was ‘mistaken’ for a real snow shovel and used to shovel snow off Chicago sidewalks.  And they say art isn’t useful?!

                                                                                                                                          Wikipedia