A floatation toy for providing a floatation device which resembles a boat includes a bottom wall and a peripheral wall fluidly coupled to and extending upwardly from the bottom wall. Such reverse-turn mimetics have utility in the treatment of cell adhesion-indicated diseases, such as multiple sclerosis, atherosclerosis, asthma and inflammatory bowel disease. The optical axes of the microlenses in one of the lens array plates are aligned with the optical axes of the microlenses in the other lens array plate. The motion transfer assembly takes the form of a horizontal jacking mechanism including the rotatable crank for moving a transfer tube relative to a power crank device.