megaphoneBendingGuide_cc.jpg
cm2BentMegaphones_cc.jpg

MAKE compadre Pete Edwards posted this rather handsome one-sheet guide for adding effect/mix control to a common megaphone voice changer. Looks like a great starting point for those looking to convert inexpensive toys into more versatile devices for music. Have closer look over @ Casper Electronics.

From the pages of MAKE:

Circuit Bending 
Volume 04, Page 93