An activity device includes a housing, at least one interactive feature, and a rotatable container mounted on the housing. The container, which is capable receiving accessories, includes an outer wall and an inner wall that define a cavity therebetween. At least one of the inner or outer walls may be transparent. The cavity is configured to hold a fluid with objects dispersed therein. The rotation of the container about its axis causes agitation of the liquid medium and engages an actuator coupled to a control unit. The control unit, when actuated via the rotation of the container, generates sensory stimulating output.