Abstract: An apparatus comprising a toy kit includes at least a pair of symmetrical-ended members, a cross-shaped member, and a dual-purposed member. The pair of symmetrical-ended members include two curved members that are mechanically coupled via spheroid domes and ball joints located at each end of the symmetrical-ended members. The cross-shaped member includes multiple shafts having a ball joints or spheroid domes at each end of the shafts. The dual-purposed member includes a shaft having a ball joint and spheroid dome at one end of the shaft. The spheroid domes and ball joints are deformable to enable mechanical coupling in which more than half of the surface area of the ball joint is wrapped by the spheroid dome and producing a unique sound when coupling.

Abstract: A toy comprising a frame and an inverting toy. In some embodiments, the inverting toy includes an invertible shell having a first surface and a second surface, the invertible shell configured to protrude outward in a first direction with respect to the frame until a depressing force on the first surface or the second surface in a second direction causes the shell to invert and protrude in the second direction with respect to the frame, wherein the first direction and the second direction are substantially opposite, an edge member formed at an edge of the invertible shell and configured to secure the invertible shell to the frame, and a pulling member formed on and protruding outward from the first surface of the invertible shell.

Abstract: A toy comprising a frame and an inverting toy. In some embodiments, the inverting toy includes an invertible shell having a first surface and a second surface, the invertible shell configured to protrude outward in a first direction with respect to the frame until a depressing force on the first surface or the second surface in a second direction causes the shell to invert and protrude in the second direction with respect to the frame, wherein the first direction and the second direction are substantially opposite, an edge member formed at an edge of the invertible shell and configured to secure the invertible shell to the frame, and a pulling member formed on and protruding outward from the first surface of the invertible shell.