This invention provides designs and assembly methods for modular toy building blocks intended for creating customizable mazes for hamsters and small pets. The blocks are easily connectable, enabling various configurations and interactive play. Assembly methods include 3-D snap-together components with optional features for adjusting maze difficulty and size, offering flexibility and engagement for both pets and users.

Circuit blocks are provided. A circuit block may include a corner section including an outer edge and an inner edge, opposite the outer edge, the corner section including a flexible, conductive material. The circuit block may also include a retainer section configured to electrically couple to a substrate. The inner edge of the corner section and the retainer section may be configured to form an inner region configured to receive and retain a magnet. Associated devices are also provided.

The present disclosure discloses a polyhedral magnetic toy brick and a combined structure. A polyhedral magnetic toy brick includes an inner-layer assembly, at least two magnets and an outer skin assembly. The inner-layer assembly includes several board bodies folded to form the inner-layer assembly. The board bodies include at least one triangular magnetic face; two magnet mounting holes are formed in the magnetic face. One magnet is mounted in each magnet mounting hole, and the two magnets on the same magnetic face have opposite outward magnetisms. The outer skin assembly wraps an outer surface of the inner-layer assembly, so that the magnets can be stably fixed on the board body and is avoided from being separated or moving relative to the board body, the board bodies with different shapes are connected, and are combined stably. Meanwhile, the possibility and diversification of constructing models are further achieved.

A framing system for a construction set comprising a number of interchangeable elements which can be arranged to construct a variety of three-dimensional structures, as well as individual, stand-alone floors, which in turn are adapted to be stacked on one another. In some embodiments, the system comprises at least one central unit, a plurality of outer mid-columns, at least one tie beam corner unit, and/or at least one curved beam unit which cooperate to form a variety of stand-alone floors. The system comprises additional components which increase the stability of the construction set, including but not limited to internal corner brackets, cross pins, cross studs, square panels, and rectangular panels.

A pin display toy for displaying collectable pins comprised of a display panel and stand. The display panel includes a first movable display area for displaying one or more pins, where the display area rotates around an axis created by a pin post. A second rotatable display area displays one or more additional pins, moves along a track and rotates around an axis formed by a pin post. A third display area, fixed in location, includes multiple pin display locations.

The present disclosure provides a wooden building block structure, which comprises building block bodies, wherein the upper end of each building block body is provided with a connecting post, the bottom end of the building block body is provided with a groove, and the inner wall of the groove is provided with a convex rib with an arc-shaped cross section corresponding to the connecting post; and when the building block bodies are connected, the connecting post is in interference fit with the front wall of the convex rib. The wooden building block is more environmentally friendly, and the problem of poor assembling stability caused by the material is solved by the fitting of the convex rib and the connecting post.

A modular wing, adapted to be used on a flying device such as a toy airplane, drone, or other small fixed wing flying device, or form a part of a wind turbine or any other apparatus that requires a wing or blade, that is compatible with all block-based toy systems such as LEGO, DECOOL or KAZI. The modular wing is comprised of a series of modular aerodynamic surfaces that may be suitable for manufacture by a low-cost method such as molding or additive manufacturing such as 3D printing, typically but not necessarily from plastic, to form wing sub elements which, when assembled together, form a wing or blade such as an airplane wing or turbine blade. The modular wing may comprise cambered or symmetric wing shapes. The modular wing may be used in a static display model fully flying aerodynamic aircraft, sailing hydrodynamic boat, or aerodynamic functioning turbine.

A modular construction kit includes modular construction blocks, each includes at least one interface face. The interface face includes a recess, a plurality of connection apertures disposed proximate to the edge of the recess, and a circular interface receptacle disposed in the center of the recess. The kit also includes modular construction connectors, each includes two opposite sides, wherein each side including a body, a plurality of connection studs extending outwardly from the body, and a protrusion extending outwardly from the body. Some modular construction blocks include predetermined functions. A modular system block includes at least a processor, storage, and wireless communication.