Sticker Speaker - Turns Anything Into a Speaker!
Plug sticker speaker input into your music device headphone jack. Stick the Speaker pad onto virtually any hollow surface and listen as it magically turns that object into a speaker. Turn up the volume on your device and hear the object amplify sound! We like using foam coolers and empty milk jugs the best! Or, use an empty shoebox and draw your own boom box on the outside for even more fun!
Requires 2 AAA batteries (not included).