Abstract: Elastic thread lines can extend along borders of puckering areas of a fabric. The thread lines can include elastic thread line sections of the thread lines passing through thread line intersections and segments of the thread lines between the intersections. The elastic thread lines can bias the puckering areas in multiple different non-parallel directions toward a puckered configuration. In the puckered configuration, the puckering areas can be gathered together to pucker the fabric. The fabric can be stitched together to form a product, such as a sleeping bag sack that is stretchable in multiple orthogonal directions by stretching the thread lines. Elastic thread line sections passing through intersections can be made more secure by forming thread line section patterns that increase numbers of thread line crossings at the intersections. Densities of thread lines in different directions can be selected to produce different amounts of gathering, and for security.

Abstract: Elastic thread lines can extend along borders of puckering areas of a fabric. The thread lines can include elastic thread line sections of the thread lines passing through thread line intersections and segments of the thread lines between the intersections. The elastic thread lines can bias the puckering areas in multiple different non-parallel directions toward a puckered configuration. In the puckered configuration, the puckering areas can be gathered together to pucker the fabric. The fabric can be stitched together to form a product, such as a sleeping bag sack that is stretchable in multiple orthogonal directions by stretching the thread lines. Elastic thread line sections passing through intersections can be made more secure by forming thread line section patterns that increase numbers of thread line crossings at the intersections. Densities of thread lines in different directions can be selected to produce different amounts of gathering, and for security.

Abstract: A guitar fingering aid and method for its use to play a selected musical composition that includes a device for mounting onto a musician's hand that grips the instrument neck where the device is strapped along its top surface onto the one of the musician's middle fingers and includes at least one finger support that projects outwardly from a rectangular web main bar of the device, with the finger support mounted to extend at a right angle outwardly from a face of the rectangular web main bar that includes a string engaging rounded surface formed along the rectangular web main bar lower surface to extend across the instrument neck, and further includes at least a small finger bar for strapping onto the musician's small finger that has a flat string engaging surface, whereby the musician, by moving their hand and fingers appropriately, can pivot, rotate, tilt and vertically move the device and small finger bar up and down the instrument neck, to depress selected instrument strings in a sequence to play a musica