Systems, methods, and articles of manufacture provide for a mold system for molding structures (e.g., sand castles) from one or more various types of molding substances (e.g., sand, clay, snow). In one embodiment, a mold system comprises a split mold comprising at least two mold sections. In one embodiment, a modular mold system allows for different types of mold sections with corresponding joining elements to be joined together to create forms for molding various types of structures. In some embodiments, mold sections are configured to facilitate the breaking of a vacuum created when molding substances are packed into the mold system, thus making it easier to separate a mold from the formed structure.

Systems, methods, and articles of manufacture provide for a mold system for molding structures (e.g., sand castles) from one or more various types of molding substances (e.g., sand, clay, snow). In one embodiment, a mold system comprises a split mold comprising at least two mold sections. In one embodiment, a modular mold system allows for different types of mold sections with corresponding joining elements to be joined together to create forms for molding various types of structures. In some embodiments, mold sections are configured to facilitate the breaking of a vacuum created when molding substances are packed into the mold system, thus making it easier to separate a mold from the formed structure.

A toy set includes: a first mold portion including: a first base portion, and an indentation formation portion extending from the first base portion, the indentation formation portion including an edge. The first mold portion is configured to receive a moldable material, the indentation formation portion is configured to form an indentation in a first side of the moldable material, and the indentation allows the moldable material to fold without separating.

A toy set includes: a first mold portion including: a first base portion, and an indentation formation portion extending from the first base portion, the indentation formation portion including an edge. The first mold portion is configured to receive a moldable material, the indentation formation portion is configured to form an indentation in a first side of the moldable material, and the indentation allows the moldable material to fold without separating.

Equipment for building sand castles can include a body having a single, monolithic, hollow structure with a vertical axis and a sidewall that is continuous and uninterrupted in a rotational direction about the vertical axis. The sidewall can include an inner pattern that is castle-like in appearance. The inner pattern can form an outer pattern in sand located inside the body. The body also has an open bottom, an open top that is completely unobstructed and has no inward protrusion, and a top radial dimension at the open top is smaller than a bottom radial dimension at the open bottom such that the body is tapered. A handle extends from the body adjacent the open top. The handle can be used to vertically lift the body from the sand located inside the body to form a freestanding sand castle without support from the body.

Equipment for building sand castles can include a body having a single, monolithic, hollow structure with a vertical axis and a sidewall that is continuous and uninterrupted in a rotational direction about the vertical axis. The sidewall can include an inner pattern that is castle-like in appearance. The inner pattern can form an outer pattern in sand located inside the body. The body also has an open bottom, an open top that is completely unobstructed and has no inward protrusion, and a top radial dimension at the open top is smaller than a bottom radial dimension at the open bottom such that the body is tapered. A handle extends from the body adjacent the open top. The handle can be used to vertically lift the body from the sand located inside the body to form a freestanding sand castle without support from the body.

A sandbox having a lid capable of being erected in a box thereof, which includes a box is internally provided with a downwardly and concavely configured recess, and the recess can have sand or water accommodated therein, characterized in that: the recess of the box has a fixing device provided therein, and the fixing device can be two slots which are in left-to-right symmetry; when the lid is removed from the box, the lid can be erected in the two slots of the box for positioning.