#1
i am starting work on a little guitar project and was wondering if there was anything that i might be able to remove a piezo element from instead of going out an buying one because radio shack is closed right now, and i sort of want to make this thing from all scraps to give it a more rugged type look.
#2
a smoke alarm, or similar device with a piezo buzzer would work. Turning the smoke detector into a housing for a boost circuit or just passive volume and tone knobs would be pretty nifty, too.