This toy, also known as Tornado Balls or Double-Spheres made from two high precision,

high hardness steel bearing balls connected with prism-like aluminum shapes.

Two balls become single body and can be spun like a top. Toy to be used on a hard

surface (as hard as possible - glass is most appropriate). It will be easier to use on concave glass

(concave mirror or pot glass lid). It is fun to watch and observe unconventional behavior
of spinning balls. If you spin balls fast enough they exhibit remarkable behavior -
one of the balls will be lifted off of glass surface and double-spheres will spin on
one ball contacting glass. Due to low friction, rotation will last very long time. Colored Light
can be applied and beautiful effects observed. Acceleration of the rotation can be achieved by using
high speed of air stream (the reason for hurricane/tornado name). More information, technical explanation
and videos can be found on ennovelcraft on the web.
Toy stand is carved from wood. As a side discovery - 1.5" double-spheres on the stand work very
well as palm massage device :-)