A calendar has one or more individual pages of the calendar that include portions of the pages that are omitted, removed or removable in order to enable aligned portions of other pages of the calendar to be viewed through the removed portions. The removed portions can be formed as apertures in the page and/or as removed portions of one or more edges of the page, among others to allow the stacked pages to form a coordinated, and optionally customizable, decorative appearance for the calendar.

A calendar has one or more individual pages of the calendar that include portions of the pages that are omitted, removed or removable in order to enable aligned portions of other pages of the calendar to be viewed through the removed portions. The removed portions can be formed as apertures in the page and/or as removed portions of one or more edges of the page, among others to allow the stacked pages to form a coordinated, and optionally customizable, decorative appearance for the calendar.

A sheet system including a sheet having an edge and at least one generally triangular hole positioned adjacent to but spaced apart from the edge. A side of the triangle is oriented generally parallel with the edge of the sheet.

A sheet system including a sheet having an edge and at least one generally triangular hole positioned adjacent to but spaced apart from the edge. A side of the triangle is oriented generally parallel with the edge of the sheet.

A sheet system including a sheet having an edge and at least one generally triangular hole positioned adjacent to but spaced apart from the edge. A side of the triangle is oriented generally parallel with the edge of the sheet.

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 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.