Abstract: A toy ball includes a stack of elastic corolla-like units, each having a central portion and a plurality of petal-like portions extending radially outwards therefrom. The central portions are formed with one or more through-holes. A connector is configured to pass through the through-holes and hold the corolla-like units together. The connector squeezes the central portions inwards thereby bending the petal-like portions outwards around the squeezed central portions and turns the petal-like portions from a stacked configuration to a substantially spherical configuration. The connector may be a cable tie or a plug-and-socket fastener.