Notebooks are portable, paper-based writing surfaces used for note-taking, drawing, or journaling. They come in many different sizes, styles, and formats, ranging from small pocket-sized notebooks to large, hardcover journals. Notebooks can be used for a variety of purposes, including work, school, creative writing, and personal organization. Many notebooks have ruled or graphed pages to facilitate neat and organized writing or drawing. Some notebooks also feature special covers, such as leather or fabric, and may have added features like pockets, bookmarks, or elastic closures. Notebooks are an essential tool for capturing ideas, recording thoughts, and keeping notes organized, and they are used by people of all ages and professions.