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Electronic Battle Bugs
Newton's Cradle / Pendulum
Celestial Orbital Permanent Motion Meter
Cool Science Electrical Playground
Circuit Science - Bubble Maker
Genuine Motor Lab
Electricity Kit
Electricity & Magnetic Combination Kit
Gears! Gears! Gears!® Motorized Wacky Wigglers® Building Set
Gears! Gears! Gears!® Dizzy Fun Land™ Motorized Gears Set
