A thick book (5cm) was cut up. Using a Class D amplifier with 10W output on each channel (bought it on ebay for 7 dollars), 8 AA-batteries (which provides 12V) and two small speakers I snatched from an old radio. The hardest part is cutting the holes in the thick book, I used a drill to do most of the page-destruction... Two screws hold the pages together. An aux cable is connected to the amp and your ready to go blow your friends' minds at school!!