A medium of exchange that is not separated from the backing item of value, has variable value and authentication protections sufficient to retain the trust of consumers is formed as a laminate having a backing layer and a precious metal foil layer. The precious metal foil layer has a predetermined weight and the laminate is dividable into multiple portions each one of which is a determinable fraction of the predetermined weight. An authentication seal is formed in an obverse side of the instrument and each one of the multiple portions contains indicia on a rear side thereof identifying the determinable fraction.

An illustrative apparatus includes a first substrate and a second substrate. The first substrate includes a first adhesive-receiving face. The first adhesive-receiving face includes a first adhesive-coated region and a first release region. The first substrate also includes a first print receiving face opposite the first adhesive-receiving face. The second substrate includes a second adhesive-receiving face. The second adhesive-receiving face includes a second adhesive-coated region and a second release region. The second substrate also includes a second print receiving face opposite the second adhesive-receiving face. The first adhesive-coated region is releasably adhered the second release region and the second adhesive-coated region is releasably adhered to the first release region.

A repositionable medium includes a base, a paper, and a first repositionable adhesive. The base has a top surface, a bottom surface, a first end edge, and a second end edge. The paper is fixedly coupled to the top surface of the base proximate to the first end edge. The paper has an inner edge and an outer edge. The outer edge is closer to the first end edge than the inner edge is to the first end edge. The inner edge is spaced a first distance from the first end edge of the base. The first repositionable adhesive is fixed to the bottom surface of the base and is not present in a first low adhesion area at a line across a width of the base and spaced a second distance from the second end edge of the base. The second distance equals the length of the first distance.

A creased sticky note with a sticky body, an adhesive layer and at least one crease is provided. The sticky body has an adhesion portion and a flexible portion disposed adjacent to the adhesion portion. The adhesive layer is disposed on the adhesion portion. The at least one crease is disposed on the adhesion portion, or is disposed between the adhesion portion and the flexible portion, or is disposed on a stress hinders area of the flexible portion which is near the adhesion portion.

A pad of a plurality of sheets of expandable slit paper is provided in which the paper expands in thickness when stretched to form expanded cells, wherein the sheets of expandable slit paper are bound together along a single edge and otherwise unbound together. In some embodiments, sheets of slit sheet material are removable for use of the slit sheet material for packing items or the like with the slit sheet material in an expanded state.

A perfect-bound booklet includes a sheet set that is a stack of multiple sheets and multiple adhesive layers provided at an end of each sheet in the sheet set and interposed between the sheets and peelably bonding the sheets together, the multiple adhesive layers containing a thermoplastic adhesive agent, and the amount of the thermoplastic adhesive agent in the multiple adhesive layers changes from each of a first surface side and a second surface side of the booklet toward the middle of the booklet in the thickness direction.