Another type of toy known as a "puzzle box" is also common: players can assemble small drawers or boxes with items in the middle from interlocking parts that resemble pieces of a flat-panel puzzle. Mechanical puzzles or dexterity puzzles such as the Rubik's Cube and Soma cube can be stimulating toys for children or recreational activities for adults.
http://www.nbuli.com/puzzle/kids-puzzle/
