6 links have been added on this idea.
  1. You can make this beautiful version at instructables.

  2. This, but it looks like that “is it a rabbit or a duck” puzzle.

    Added on 2 ideasView all 2 ideas this link was added to.
  3. I’ve always wondered what it would look like if each square’s area was proportional to the element’s abundance on Earth, or the Cosmos. I am linking to this as although it isn’t it, it does give it a modern day twist.