Abstract: A retaining device for sewing machine bobbins of various sizes is formed of flexible material, generally arcuate in cross section, defining a majority of a circle but open at an outer side. The retaining device thus defines a pair of opposed flanges or sidewalls which, upon placement of a bobbin in the holder, spread apart elastically, then return to a closed position capturing the two opposed circular discs of the bobbin within the holder. In a preferred embodiment the bobbin holder is generally toroidal in shape but for the open side, forming a continuous circular trough within which bobbins of various sizes can be placed.

Abstract: A retaining device for sewing machine bobbins of various sizes is formed of flexible material, generally arcuate in cross section, defining a majority of a circle but open at an outer side. The retaining device thus defines a pair of opposed flanges or sidewalls which, upon placement of a bobbin in the holder, spread apart elastically, then return to a closed position capturing the two opposed circular discs of the bobbin within the holder. In a preferred embodiment the bobbin holder is generally toroidal in shape but for the open side, forming a continuous circular trough within which bobbins of various sizes can be placed.

Abstract: A container for a magnet, in the form of a box, has an outer clear plastic shell and an inner box preferably of opaque molded material, sized to fit closely within the clear outer shell. A magnet fits closely within the inner box. Between the outer and inner boxes, at an outer face of the composite container, a sheet of decorative or graphic material can be retained, sandwiched between walls of the outer and inner boxes. The inner and outer box elements preferably are retained together by snap-in structure, which in one preferred embodiment comprises nipples molded on the inside surface of side walls of the outer box, to be engaged in dimples or recesses at corresponding positions on the outer surface of the inner box's side walls. Both the inner and outer box elements are open at one side, and the magnet can be retained in the inner box by adhesives, fasteners or other appropriate connection devices.