Sworld Green Venus Toy
This a very cool rheoscopic toy is a swirling world in your hands.
Rheoscopic fluid is a special material that shows currents. Within this planet's crust you will see fluid mechanics in action at rest and in motion.
SWOLRD's shell is strong and resilient so you can bounce it. Give it a shake and watch a coutless microscopic shimmering particles flow. After the turbulence the SWORLD will calm and the particles will settle.