Get a Sp!n Top here:
From Art of Play: BUY NOW: Sp!n Top
Sp!n Top: once set into motion the eye only perceives the punctuation mark ! in the center of a ring, with the vertical line seemingly suspended in space above the dot. The rate of spin is above the flicker fusion threshold of human vision, and the crossbars become blurred out and invisible- the effect is even more pronounced in person (hard to capture on video). Physics and psychophysics combine to produce this wonderful illusion!
Get this tiny brass top here:
From Etsy: BUY NOW: Tiny Spinning Top
Tiny Top: the smallest spinning top in my collection so far. Made of brass and works well!
Get these d6 tops here:
Fron Etsy: BUY NOW: d6 Spin Tops
d6 Cube Tops: symmetry axes are often associated with interesting physics. For instance- a cube can spin like a top. Here we see that d6s can spin in a very stable fashion.
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From eBay:(best selecton) BUY NOW Ring Chain Catch
From Amazon: BUY NOW Ring and Chain Set
The physics of this trick in great detail with more slow motion: Ring Falling into a Chain: No Magic — Just Physics
Ring Catch Chain Trick: a solid ring will be caught by a loop of chain if it tumbles during its fall. By Newton's Third law, when the ring twists into and hits the chain, the impact transfers momentum to the end of the chain, which rises up and over the ring- seen here in 480 fps slow motion.
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From eBay: BUY NOW: Tail Spin Kinetic Toy
Tail Spin Geared Kinetic Toy: fourteen gears arranged on seven linked segments meshed in such a way that the configuration can roll up and stack compactly or extend into a line. With a flick of the wrist, one can impart enough angular momentum to the assembly to cycle it through its full range of motion- shown also in 240fps slow motion at the end of the video. Invented by Oskar van Deventer and produced by Think Fun toys.
From Crushmetric: BUY NOW: Crushmetric Pen
Crushmetric Switch Pen: functional kinetic art based on materials science and tessellation origami techniques. The crushed state can be reversed over and over in this incredible design by artist/inventor Noah Deledda, also known for his similar sculptures created from aluminum cans. New wonderful and affordable physics art that is also a practical ballpoint pen.