Coin Spinner - Ratchet

Duck Game - Belts

Air Ball - Coanda Effect

Paper Airplane Launcher - Springs

Boomerang Car - Worm Gear

Mirror Bank - Mirrors

Rocket Revolver - Compressed Air

Strobe Light Animator - Light Refraction

Trip Wire - Momentum Transfer

Build Box Subscription - Monthly

Domino Catapult - Projectile Motion