Sticky Notes refer to small, usually square or rectangular pieces of paper with a sticky back that can be attached to various surfaces. These notes are often used as reminders, for jotting down quick thoughts or ideas, and for leaving messages on desks, refrigerators, or other visible places where they will be seen by others. They come in different colors, sizes, shapes, and designs, making them a versatile tool for organizing tasks, scheduling appointments, and keeping track of important information.