Try old cassette decks. I picked up a couple of 80's era, high end Japanese decks that were faulty. They were chock full of film caps and there were a few jrc4558's for good measure.
Now, time to find a disused mini chromatic keyboard that I can scavenge for my synth project.....!
I have 5 keyboards sitting in my room right now, none of which get any use. Actually 6, but one of them is a Casio MT-30 that I refuse to give up on (bought it broken from Goodwill). Moral of the story, go to Goodwill :).