One embodiment of a toy (22) having a plurality of balls (12) inside a container (26). Demonstrating ball interactions without the balls (12) making physical contact with one another can be accomplished with a flat, surface (20). To operate the toy (22) the user moves it and therefore its operation does not require the use of an auxiliary object with specific properties. Electrical charge migration in the toy (22) can cause the balls (12) to form patterns that can be used to play games. When the toy (22) is flipped upside down, the balls (12) can roll on the flat surface (18) located above them, which appear to the user as if the balls (22) are defying gravity. Other embodiments are described and shown.