Abstract: An electrical connection structure is provided. The electrical connection structure includes a through hole, a first pad, a second pad and a conductive bridge. The through hole has a first end and a second end. The first pad at least partially surrounds the first end of the through hole and is electrically connected to a first circuit. The second pad is located at the second end of the through hole and is electrically connected to a second circuit. The conductive bridge is connected to the first pad and second pad through the through hole, thereby making the first and second circuits electrically connected to each other.

Abstract: A flexible massager bar, which includes a flexible round rod, two hand grips fixedly fastened to two opposite ends of the round rod, and a plurality of massaging wheels respectively turned about the round rod between the hand grips, the massaging wheels each holding a set of rotating balls around the periphery for massaging.

Abstract: A combination toy hoop, which includes a plurality of spherical members, and a plurality of flexible coupling rods respectively connected between each two of the spherical members, the spherical members each are formed of two hemispherical shells fastened together by a plug joint or screw means, the hemispherical shells of each of the spherical members each having two keyway-like coupling notches, the coupling rods each having two round heads at two opposite ends respectively engaged into the keyway-like coupling notches at the hemispherical shells of the spherical member.