Abstract: A device which may be manipulated by the hand is useful as a toy and as an exercising device to rebuild motor skills and rebuild muscles and flexibility. The device comprises an elongate, endless member of a particular shape. The shape comprises a plurality of loops with a portion of the member passing through each loop. The device may be manipulated by bending the loops over one another or by deforming the loops along the general axis of the member so that a point on the member appears to move along the member in wave-like fashion. The member is flexible and resilient so that it may be deformed, but when released, assumes its initial shape. The initial shape may be dictated by a combination of resilience and contact between portions of the member or by the “memory” of the member.