This instrument was created having three different sections. The lower section uses a circuit-bent board from a toy ray gun. The upper section uses the bent-board from a toy cell phone, and the neck section uses a "Kracklebox" or "Kraakdoos" circuit from the web (links at bottom). Each section has its own on/off switch and its own 1/4" audio output jack. This allows using different external effects for each section, mixing in different ways, for wild results.
Some links to info/schematics for the Kracklebox or Kraakdoos circuit: