Barebones
Barebones is a term used to describe items, plans, or systems that are stripped to their essential components, with all optional features removed. The expression derives from the literal bones that support a body, used figuratively to imply minimalism. As an adjective, barebones means minimal or skeletal in form; as a noun, it can refer to a barebones version or kit.
In technology, a barebones computer or kit is a partially assembled system that provides the main chassis
The phrase is also used as a title or name in media; several albums, films, and bands