Furniture refers to objects intended to support various human activities such as seating, eating (tables), storing items, working, and sleeping. Furniture is also used to hold objects at a convenient height for work, or to store things. Furniture can be a product of design and can be considered a form of decorative art. In addition to furniture's functional role, it can serve a symbolic or religious purpose. It can be made from a vast multitude of materials, including metal, plastic, and wood. Furniture can be made using a variety of woodworking joints which often reflects the local culture.