Smithsonian Perpetual Motion Machine spring Spark your child’s imagination with

Spark your child’s imagination with the Mini Waffle Constructor Expert – a 301-piece building set by Marioinex that blends creativity

This glow-in-the-dark moon model mounts to walls or ceilings

easy to hold design

A hands-on STEM adventure for ages 8+ that brings dinosaur discovery to life

it’s a perfect project for travelers

Smithsonian Perpetual Motion Machine spring Spark your child’s imagination withExplore the fascinating science of motion and energy with the Smithsonian Perpetual Motion Machine. This interactive kinetic display uses steel balls and balanced motion to show how momentum and force are transferredcreating a continuous chain reaction effect. A mesmerizing STEM learning tool and desk display for ages 8+.