Triple Pendulum Chaotic Fidget 

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Triple Pendulum Chaotic Fidget: This interesting spinner is made from stainless steel and features three physical pendulums each mounted with their own low friction bearing. In slow motion one can see the kinetic energy and angular momentum is transferred from one pendulum to another as the entire device rotates, with some spinning rapidly and others rotationally at rest- the intricacies chaotic motion, characterized by extreme sensitivity to initial starting conditions, tiny differences in how the system is released leads to dramatically different outcomes each time.

Glow Trace Chaotic Pendulum Kit

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From KiwiCo: BUY NOW: Glow Pendulum Kit

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Glow Trace Chaotic Pendulum: this fun and amazing DIY kit features a UV diode to trace the intricate path of this double pendulum system on to a phosphorescent screen, revealing the physics of chaotic motion. It’s amazing that such complex motion can arise from a simple assembly of two pendulums, one attached to the end of the other. Chaotic motion, such as that observed here, is characterized by extreme sensitivity to initial starting conditions, tiny differences in how the system is released leads to dramatically different outcomes each time. 

 

Chaotic magnetic Pendulum

These chaotic pendula are still available on eBay!

From eBay: BUY NOW: Krazy Leg Pendulum

Chick here for similar chaotic systems

Chaotic Magnet Pendulum: adding magnetic forces to gravity gives this pendulum chaotic motion- not random, but very sensitive to slight differences in initial launch conditions. Swipe to see a particular launch path that begins with a semi-stable orbit but then goes chaotic, captured with an attached LED and recorded with a slow shutter app. Arranging the dipoles magnets on the base leads to different patterns of motion- here white attracts and black repels. This vintage device is from the 1970s and was sold by the name “Krazy Leg” by Rathcon Inc.


Magnetron Chaotic Rotors

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From eBay: Search NOW Magnetron Chaotic Rotator 

Click this link for another toy featuring the math of chaos theory! 

Chaotic Coupled Rotors: kinetic energy is passed back and forth chaotically due to magnets mounted on the the ends of the spines that repel. This toy was marketed under the name Magnetron and sold in the Natural Wonders shops in the 1990s-sometimes available on eBay.

Magnetic Chaotic Pendulum

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Magnetic Chaotic Pendulum 

Chick here for similar chaotic systems

Magnetic Chaotic Pendulum: adding magnetic forces to gravity gives this pendulum chaotic motion- not random, but very sensitive to slight differences in initial launch conditions. Arranging the dipoles magnets on the base leads to different patterns of motion- here the center magnet attracts and the rest are set to repel. ROMP pendulum by Hog Wild toy company. 

Chaotic Fidget

This is the exact one used in the video- works well! 
From Amazon: BUY NOW Double Pendulum Chaotic Fidget 

Chaotic Fidget: a double pendulum spinner- chaos in the palm of your hand! This miniature double pendulum is made from stainless steel, which provides high mass so one can feel the unbalanced center of gravity shift about, and bearings in the joints allow for smooth and sustained motion. Slow motion reveals the intricacies of the chaotic motion, characterized by extreme sensitivity to initial starting conditions, tiny differences in how the system is released leads to dramatically different outcomes each time. 


Chaotic Pendulum Kinetic Art

These vintage pieces are often available on eBay. 
From Ebay: Search NOW Vintage Otagiri Kinetic Art 

Chaotic Pendulum Kinetic Art: the motion of the skateboarder is that of a pendulum influenced by magnets in the skateboard and the mirrored base- chaotic motion (in the technical sense) is the result. When set into motion the resulting path taken by the figure will never be same as the last. Made in the 1970s by Otagiri. 

Chaotic Coupled Rotors

Sometimes available on eBay: 
From eBay: Search NOW Magnetron Chaotic Rotator 

Click this link for other tosy featuring the math of chaos theory! 

Chaotic Coupled Rotors: kinetic energy is passed back and forth chaotically due to magnets mounted on the the ends of the spines that repel. This toy was marketed under the name Magnetron and sold in the Natural Wonders shops in the 1990s-sometimes available on eBay.