A holder, in helix form, has an opening in communication with a helix interior. The helix may be capable conforming to the shape of an article to be carried at least partially within the interior. Applying a strain to the helix causes the helix to grip the article. The gripping by the helix may be reduced or eliminated by applying a compressive force to the helix.

A device for measuring in real time the volume of a partially upturned bottle has a sleeve that extends around the upturned bottle with an open distal end and a closed proximal end. An accelerometer in the device determines the vertical direction and the angle between the vertical direction and the longitudinal axis of the bottle. Another accelerometer measures the force exerted by the bottle in the direction of the longitudinal axis. These parameters are used to calculate the total mass and volume of the upturned bottle. A dimmable screen displays the total mass, total volume, change in mass and/or change in volume.

A baby bottle holder for supporting a baby bottle in a manner that allows a baby to feed from a baby bottle. A substantially planar support frame has a bottom portion, a top portion with a rounded first side and a rounded second side with an opening configured to accept a portion of a baby bottle. A first side portion of the support frame is spaced apart from a second side portion, so that a baby can grasp one or both side portions. A bottle gripping element lines the opening. In one example, the bottle gripping element is a thin layer of rubbery material. In another example, the bottle gripping element includes a compliant seal portion adapted to accepting bottles of various diameters. In various examples, the frame includes rattles, movable elements such as rotatable wheels, or decorative elements such as ears.

A hands-free bottle holder has a pair of opposed, integrally formed, interconnected, substantially trapezoidal wedge members. When assembled, each wedge member is the mirror image of the other. Blocks associated with the wedges enable height adjustment. A hinge rotatably interconnects the two wedge members. A seam formed medially of the wedges defines a hinge. A bottle holder is seated atop an upper surface of one of the wedge members.

A spillproof container assembly includes a container body and a lid body that is adapted to be fastened onto the container body by screwing. Both the container body and the lid body are advantageously provided with outwardly extending wing portions for enhancing the grippability of and properly orienting the container assembly for small children. The outwardly extending wing portions of the container body are aligned with the outwardly extending wing portions of the lid body. The lid body is provided with an acoustic waveguide, and sound generating structure is provided in communication with the acoustic waveguide for creating an audible feedback when the lid body has been tightened onto the container body to a predetermined relative position and tightness. The acoustic waveguide further functions as a viewing port that provides a visual feedback so that a user can visually verify the position of the lid body with respect to the container body. In addition, the wing portions of the lid body are designed to slightly interfere with and cam over respective upper platforms on the wing portions of the container body so that a user will be provided with a tactical feedback as a lid body is approaching an optimal amount of tightness with respect to the container body.

A device for measuring in real time the volume of a partially upturned bottle has a sleeve that extends around the upturned bottle with an open distal end and a closed proximal end. An accelerometer in the device determines the vertical direction and the angle between the vertical direction and the longitudinal axis of the bottle. Another accelerometer measures the force exerted by the bottle in the direction of the longitudinal axis. These parameters are used to calculate the total mass and volume of the upturned bottle. A dimmable screen displays the total mass, total volume, change in mass and/or change in volume.