Swinging Wonder Newtonian Demonstrator 

This early version sometimes found here (with many new and vintage versions):

From Etsy: BUY NOW: Newton's Cradle Desktop Toy

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Vintage Newton’s Cradle: patented in 1970 this piece of physics toy history is more than 50 years old! This one still has the foil label that reads: Swinging Wonder Newtonian Demonstrator and was the first version of the Newton’s cradle marketed as a desk toy for home or office. The patent holder Lee Trippett manufactured more than 400k units from 1968-1970 out of his Scientific Demonstrators Inc. factory in Eugene OR. Conservation of momentum and conservation of kinetic energy offer insights to describe the dynamics of this famous desk toy, but the best physics description is more complex- dozens of peer reviewed papers have appeared in just the past few years on this fascinating toy. 

Vintage Early Newton's Cradle Design

This early version is hard to find, but many new and vintage versions available here:

From Etsy: BUY NOW: Newton's Cradle Desktop Toy

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Vintage Early Newton’s Cradle Design: produced in 1969 and patented in 1971 this early design of the famous desk toy featured 3 balls instead of 5, and hanging from plastic struts instead of string. Sold as “Knock It To Me” out of Covina California by Brutoco Development with design patent by Jean Pierre Abba. A piece of physics toy history- where conservation of momentum and conservation of kinetic energy combine to describe the motion of this famous desk toy. 

Spectrum Newton's Cradle 

Get this colorful version here:
From MoMA: BUY NOW: Rainbow Newton's Cradle

Get an amazing large version here:
From Etsy: BUY NOW: Giant Newton's Cradle

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Spectrum Newton’s Cradle: Art meets science in this rainbow inspired seven sphere model captured in slow motion. The sound you hear is real as recorded in 240 fps mode. The physics of conservation of momentum and conservation of kinetic energy combine to describe the motion of this famous desk toy. Produced by Block Design for the MoMA gift shop. 


Newton's Spindle

This unique toy only available here:

From safetynailer.com: BUY NOW: Newton's Spindle

Follow this link for a regular Newton's Yo-Yo

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Newton’s Spindle: an interesting innovation- a quiet clacker (lol!) which uses neodymium magnets as the swinging weights. The weights still collide but without making physical contact via magnetic repulsion, yet the exchange of momentum is just like that of a regular Newton’s yo-yo, one weight comes to rest while the other obtains all the momentum. Newton’s 3rd Law states that action force equals opposite reaction force- here the red and blue weights (embedded magnets) are equal in mass, so the forces of each collision provide accelerations that are equal and opposite such that the deceleration of the incoming mass is equal to the acceleration of the outgoing mass and the masses trade places leaving one always at rest. 

Magnetic Newtons Cradle

This magnetic version fo Newton's cradle is no longer in production, but can be found on ebay.

Here are some nice versions of the classic Newton's Cradle 
and here is a nice Magnetic Replusion Demonstration

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Magnetic Newton's Cradle: the famous collision demonstration reimagined with opposing magnets as the pendulum weights- shown here in two modes of operation. Initially the collision pattern looks similar to the traditional colliding spheres version but quickly goes chaotic- the magnetic field of each weight interacts with all the other magnets simultaneously making the system nonlinear. A 1990s desk toy by Fascinations- sadly no longer in production. 

Giant Newton's Cradle

This industrial grade museum quality device available here:
From Etsy: BUY NOW: Giant Newton's Cradle

Regular sized Newton's cradles availabe here:
From Amazon: BUY NOW: Newton's Cradle

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Newton's Cradle: industrial model made with galvanized aircraft cable, aircraft aluminum for the frame, and 1.5 inch one-half pound nickel plated chrome steel spheres. (0.23 kg and 3.8cm in diameter each) The classic demonstration that shows the curious behavior due to conservation of both momentum and kinetic energy. Swipe to see comparison to standard version.


Newtons Yo-Yo

Get a set here: 
From Educational Innovations: BUY NOW Newton's Yoyo 

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Newton Yo Yo: Newton's 3rd Law states that action force equals opposite reaction force- the the green and yellow spheres have equal mass, so the forces of the collision provide accelerations that are equal and opposite such that the spheres trade places.