How's this...show the object to five people. If more than one sees 'a figure' in it then it's figurative. The more agreement on a visible figure then the more figurative it is.
Get 100 people to view it and you could even claim that it is X% figurative/non figurative. This could be affixed to the bottom or to the shipping container like the additives on cereal boxes.
basically if it seems to be anthropomorphic then it is. I hope this is of some use to you I'm going to go look at clouds for a little while now.