A device and method of observing mental condition of a user by interacting with an improved swatch of chain mail mesh that comprises interconnecting, polygonal plastic links suitably interconnected to define a sheet having each of the interconnecting, polygonal links having at least one degree of freedom of movement in at least one direction with respect to its neighbouring polygonal links wherein each of the interconnecting, polygonal links, interconnected to at least one neighbouring interconnecting polygonal link, combine to form an operative upper surface and an operative lower surface of the sheet, and wherein at least a portion of at least one of the operative upper surface and the operative lower surface of the sheet generally feels generally smooth with gaps, which produce a calming or pleasing effect when contacted with or moved over, or combinedly contacted with and moved over a human's body portion which being apt to sense of touch. The sheet has a predetermined drape coefficient, nonlinear motion, and is capable of providing relief in stress or pleasure when a human employs the same. The device is a fidget toy, and when used during observation a diagnosis and a therapy tool.