An interactive entertainment apparatus comprising a structure for use with a child receiving device is disclosed. The entertainment apparatus includes a fluid-filled, pliable container portion capable of being selectively compressed by a user to displace the fluid within the container. The apparatus includes attachment mechanism configured to secure the apparatus to a child receiving device proximate a child received in the child receiving device such that the child can contact the pliable transparent portion of the base to displace the fluid. The apparatus may further include an infant mobile including a support arm, a housing suspended by the support arm, and one or more hanging elements suspended from the housing.