Smithsonian Perpetual Motion Machine Plush Dishwasher safe for easy cleaning

Dishwasher safe for easy cleaning and regular use

Collector’s Discovery: Add rare and educational fossils to your collection that you can display and examine

Celebrates the power and legacy of prehistoric creatures in a wearable form

Wrap your finger in oceanic flair with this Octopus Tentacle Ring

Smithsonian Perpetual Motion Machine Plush Dishwasher safe for easy cleaningBuild a Perpetual Motion Machine powered by an invisible magnetic field! Ever wonder why scientists, engineers, and mathematicians have never been able to create such a machine without an external energy source like batteries? Explore different kinds of motion machines and understand why they didnt work. Learn about magnets and the First and Second Laws of Thermodynamics. Understand how batteries create the magnetic force to keep the machine