In the past few years, we have covered a whole host of cool optical illusions here. The Moire Blinking Cat is also worth a look. It uses a simple motor to create the illusion of a blinking cat thanks to the Moire effect. As the mask rotates, it creates the illusion that the cat image is moving.
More gadgets like this: here
Moire Blinking Cat Optical Illusion Toy 😺
The above video gives you a better idea how this works. More info is available here.
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