A shed is a small building used for storage or as a studio or office, usually situated in a backyard or side yard of a residential property. Sheds can be simple or elaborate, small or large, store-bought or a project for the do-it-yourselfer. Materials and styles often mirror main residences, although simple pre-made models can be situated at the back or side of a property, away from the view of the house. A potting shed is a simpler alternative to a greenhouse and is easier to construct. It can be a structure with a barn-like sliding door or can have regular doors with glass panes to allow in natural light while working. Some are made of recycled materials, which cuts down on costs. Most are not intended to be a space in which to grow plants for long periods of time and are simply spaces to work and keep garden supplies.