The present invention provides an interactive play structure including an active targeting system for automatically sensing the location of a play participant and spraying or propelling water or other play media at the sensed location. The tray device comprises a tray plate and a tray frame. A set of flexible pull lines coupled to a resilient spring system are carried within the tower structure. The pre-cured silicon adhesive pads promote thermal contact while also decoupling any lateral mechanical strains that may arise as a result of different thermal expansion and movement between the flip chips. An output circuit is provided for outputting data while a moving image is displayed, wherein the data indicate that a printing-allowed image will be displayed later.