Abstract: An athletic shoe (or other article of clothing) has a pocket formed therein, and an interchangeable unitary assembly is slidably received within the pocket and is retained therein by means of a flap carried by the shoe. The interchangeable unitary assembly preferably comprises a molded plastic card having a battery, microchip, speaker and on/off switch encapsulated therein and electrically connected together. A push (or "press") button is carried by the shoe and overlays the switch when the card is received in the pocket. The push button may be pushed to close the switch, so as to energize the microchip from the battery and generate an audible signal, such as a tune or message.

Abstract: An athletic shoe for playing basketball and the like has an inner side portion with a pocket formed therein, and an integral unitary assembly is slidably received within the pocket and is retained therein by means of a flap carried by the shoe, the flap and shoe having cooperating hook-and-loop fasteners, respectively. The unitary assembly includes a board having a battery, microchip, audio speaker and on/off switch carried thereon and electrically connected together. A push button is carried by the shoe and overlays the switch when the unitary assembly is received in the pocket. The push button may be pushed to close the switch, so as to energize the microchip from the battery and generate an audible signal. One example of the audible signal is an inspirational message (such as "have a happy face, stay away from drugs").