Amazon.com: NC YUTOOL Levitron Ion Revolution Platform, Magnetic Levitation Floating Ion Revolution Display Platform Tray with Ez Float Technology : Home & Kitchen
Levitron
Levitron -- Spin stabilized magnetic levitation
The Levitron | Demo Corner | OAPT Newsletter
mechanical engineering - Can a neutrally bouyant helium balloon be suspended in air using magnet entrapment? - Engineering Stack Exchange