Nkisi sculptures are small human or sometimes animal figures made of wood, metal and bone. Nkisi were commonly found in Congo Basin in Central Africa. Most were the result of a partnership. A sculptor, working with a Banganga, or spiritualist, would create the form and wrap or embed it with spiritually charged substances, fruit, mushrooms, and certain minerals. The form was then imbued with a spirit or spirits, becoming a portable grave that allowed conversation, supplication, and negotiation with the spirit.