In the past few years, we have covered plenty of neat optical illusion toys here. Rabbit Tanaka’s Cosmic Window is also worth a look. It is a motorized illusion display that reacts to blacklight to put on a mesmerizing show. It measures 19 x 19 x 4”. These were made and sold in the 1990s.
More gadgets like this: here
Rabbit Tanaka Electric Optical Illusion Wall Hanging Disc ► Gadgetify
The Cosmic Window can be hung on the wall or used on your desk.
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