Smithsonian Rock Tumbler Toys Explore the science of sight

Explore the science of sight with the Eyeball Plush

and Brachiosaurus

Whether it's for imaginative play

or prehistoric-themed curiosity

Instead of bulky supports

Smithsonian Rock Tumbler Toys Explore the science of sightTurn rough rocks into beautiful, polished stones that you can use to make charms, bracelets, keychains, and more. Begin by tumbling the included rocks in a barrel with water and grit, then repeat this cycle using progressively finer grits. In just weeks, the Smithsonian Rock Tumbler mimics the process that takes oceans thousands of years! Turn rough rocks into beautiful, polished stones! Includes accessories to make charms, bracelets, and keychains.