A container having enhanced wall integrity and a rotational element is provided that includes a sidewall having polygonal cross-sectional shape and an alignment structure formed therein. The alignment structure is adapted for orienting the container with respect to a second container such that the panel sections of the containers become parallel with one another and the containers may be fully nested one within the other. The alignment structure can be recessed into the sidewall to form peaks and valleys along an inner surface of the container. The peaks include first and second faces sloping in opposite directions designed to direct corners of the first container's sidewall toward the interior valleys of the second container in order to orient the containers as they are stacked.

A container having enhanced wall integrity and a rotational element is provided that includes a sidewall having polygonal cross-sectional shape and an alignment structure formed therein. The alignment structure is adapted for orienting the container with respect to a second container such that the panel sections of the containers become parallel with one another and the containers may be fully nested one within the other. The alignment structure can be recessed into the sidewall to form peaks and valleys along an inner surface of the container. The peaks include first and second faces sloping in opposite directions designed to direct corners of the first container's sidewall toward the interior valleys of the second container in order to orient the containers as they are stacked.

A drink cup includes a body formed to include an interior region providing a fluid-holding reservoir and a brim. The brim is coupled to the body to form an opening into the interior region. The body includes a floor and a side wall that extends away from the floor. The drink cup further includes a body-strengthening system coupled to the body.

A drink cup includes a body formed to include an interior region providing a fluid-holding reservoir and a brim. The brim is coupled to the body to form an opening into the interior region. The body includes a floor and a side wall that extends away from the floor. The drink cup further includes a body-strengthening system coupled to the body.

A system provides behavior therapy by including separate compartments, where one compartment holds an object visibly positioned as a reward for clearing an objective. The system includes a first receptacle. A second receptacle is coupled to the first receptacle. The second receptacle includes a compartment for receiving the object. Access to the compartment in the second receptacle is obstructed by a wall of the first receptacle. The apparatus further includes a magnetic lock. Access to the compartment in the second receptacle is provided in the event the magnetic lock is opened. The system further includes a magnetic key including a third magnet. When the magnetic key is placed proximate to the magnetic lock, the third magnet displaces the first magnet from the magnetic attraction to the second magnet to open the magnetic lock.

A system provides behavior therapy by including separate compartments, where one compartment holds an object visibly positioned as a reward for clearing an objective. The system includes a first receptacle. A second receptacle is coupled to the first receptacle. The second receptacle includes a compartment for receiving the object. Access to the compartment in the second receptacle is obstructed by a wall of the first receptacle. The apparatus further includes a magnetic lock. Access to the compartment in the second receptacle is provided in the event the magnetic lock is opened. The system further includes a magnetic key including a third magnet. When the magnetic key is placed proximate to the magnetic lock, the third magnet displaces the first magnet from the magnetic attraction to the second magnet to open the magnetic lock.

A container having enhanced wall integrity is provided that includes a sidewall having a polygonal cross-sectional shape and an alignment structure formed therein. The alignment structure is adapted for orienting the container with respect to a second container such that the panel sections of the containers become parallel with one another and the containers may be fully nested one within the other. The alignment structure can be recessed into the sidewall to form peaks and valleys along an inner surface of the container. Alternatively, the alignment structure can protrude from the sidewall to form peaks and valleys along an inner surface of the container. The peaks include first and second faces sloping in opposite directions designed to direct corners of the first container's sidewall toward the valleys of the second container in order to orient the containers as they are stacked.

A container having enhanced wall integrity is provided that includes a sidewall having a polygonal cross-sectional shape and an alignment structure formed therein. The alignment structure is adapted for orienting the container with respect to a second container such that the panel sections of the containers become parallel with one another and the containers may be fully nested one within the other. The alignment structure can be recessed into the sidewall to form peaks and valleys along an inner surface of the container. Alternatively, the alignment structure can protrude from the sidewall to form peaks and valleys along an inner surface of the container. The peaks include first and second faces sloping in opposite directions designed to direct corners of the first container's sidewall toward the valleys of the second container in order to orient the containers as they are stacked.

The Invention is a standard set of round, cylindrical and spherical pieces that form objects to hold other objects and food, to transport things and to build modular elegant and beautiful constructions. For example, the Invention's pieces can be used as spherical flowerpots that are arranged along a walkway with flowers, and those same flowerpots can be stacked to support a flowerpot a few feet off the ground. Furthermore, the flowerpots can be stacked to form columns that vines grow on. Pieces can be made exponentially larger and smaller, and features on pieces can also be made exponentially larger and smaller, while maintaining compatibility within the system of Invention pieces. For example, the stacked boxes that are FIG. 33 can be elongated to stack in a manner that forms the pattern of a standard brick wall's interlocking pieces.

A plate having a top surface, a bottom surface, and an indentation configured to detachably and securely receive and/or engage an implement having a lip or raised rim, such as a beverage cup, is disclosed. The indentation may comprise a threaded configuration, or a series of grooves, suitable for engaging an implement having a lip or rim, such as beverage cup. The indentation may be a raised indentation or a recessed indentation, and may be closed or open to the top of the plate. The plate may also include at least one or more slits therein, the slits being capable of receiving therein an eating implement, such as a spoon, fork or knife. Engaging a drinking implement having a lip and/or rim with the indentation at the bottom surface of the plate accommodates the secure attachment of the drinking implement to the plate, permitting the user to accommodate the plate and a beverage implement (cup) securely, and with one hand.