A children's development device has a carrier coupled to a juvenile product and elevated above a support surface. The carrier defines an x-y-z axis system including a generally vertical z-axis, a generally horizontal x-axis and a generally horizontal y-axis oriented normal or perpendicular to the x-axis. A child seat is coupled to the carrier and positionable such that feet of an occupant of the seat can contact a launching surface. The child seat can, relative to the juvenile product, independently rotate about the z-axis, rotate about the x-axis, and rotate about the y-axis