In the facebook group ‘Bead weaving with a needle‘ I saw a very nice piece of weaving.
It’s made by Kathy Kosinsky. She said:
It’s a set of geometrical pendants. Look at each and tell to yourself, what do you see first – multiple quadrangles or absolutely different shapes like oval. star and so on.
I was looking for black and white optical illusions and found somewhere a picture of four groups of quadrangles. I made one pattern and then tried to turn some quadrangles to 90 degrees. The figure became different. So I made as many changes as I could and loomed some of them.
On her website Katenkin-biser.ru you can find many examples. Especially her instruction page is worth the visit.
Below you can see all the patterns she already made. It’s fun how I automatically see a circle or triangle in the middle.