As many of you may already know. Piezos can be made into a simple and effective contact pickup. Did you also know many can be found cheaply or even free? Here are a few places I found piezo elements free because they were going for the trash:
Cards that play music
some talking stuffed animals
I found 4 or 5 out of a broken rockband drumset
an old auto alarm system.
Hope this helps. Feel free to add to the list.
o99... how did the headphone speakers work out for you???
$ store had 0 door alarm buzzers available... I had only bought a couple, many months ago to use for scaring deer in my garden... they are hopelessly lost, now.
just found 6 of em at a yardsale... all wrapped up in a bundle of packing tape..lol.. a buck for all of em!
Just a reminder, this is prime yard sale time. Around here, I'm finding a lot of toys that make noise for 10 to 25 cents.
Tnx for suggesting the possibilities!
Seems a lot of the modern musical cards aren't using piezos anymore they're using some kind of tiny flat dynamic speaker, usually in black plastic, stamped 16 ohms.
Howsoever, if you're prepared to wait around a couple of weeks, you can order a bag of 15 for $3 and change from these guys, they've always been reliable for me, but they're never very fast. Expect a month and you won't be dissappointed.
I too stocked up on the Dollar Tree alarms, before finding this.