PS. If you can find me a manmade object that cannot be identified as such via evidence of the application of manual implements, or alternatively of a non-manmade object that evidences the application of manual implements, then I'll reconsider.
Sheez. One need look no further than a museum of modern "art."
How would you categorize the figurine I made from clay I dug from the bank of a stream and air dried? No implements involved.