One of my favorite things that was shown to me during my elementary age years was an optical illusion. It was the very famous Rubin Vase (pictured below) which you can see in either two ways - as a vase or as two faces that are facing each other.
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This image is so creative using the flower as a tutu. I like how the colors in this image are very warm and there is a little bit of orange in the flower. It helps the image how the flower is in focus but everything else is blurry.