Writing instruments are used to apply ink or graphite to a writing medium. They are characterized by a thin, elongated design, which makes it easy to hold and guide while writing. Typical examples are pencils (pencils, wooden pencils), pencils (fountain pens), felt pens (text markers), ballpoint pens and ink rollers, but also brushes, handles, crayons and chalkboards. For more typing convenience, variants are available for right and left handers. Wooden pencils, for example, can also be used for painting, pencils for drawing.