Kirlor
Kinetic Art Perpetual Motion Machine, Physical Balance Kinetic Energy Model, Newtons Science Physics Gadgets, Non-Stop Rolling Ball Toys, Balance Stress Relief Creative Gifts for Friends and Family
The Swinging Sticks
The Swinging Sticks Kinetic Energy Sculpture - Desktop Toy Version (White/Red)
Toysmith
Toysmith Galaxy Kinetic Art Science Kit
Toysmith
Toysmith Euler's Disk