Craig Webb said:

> >Maybe a cheap vibrator can me made with a coil and a permanent magnet: The
> >magnet monted on a spring plate so it swings without friction and noise,
> >and driving the coil with resonant frequency? *very* cheap at high volume,
> >but time, consuming to build in small production?

> Yes, this sounds like it might work, but I'm not looking to design the
> thing. Does anyone know of sources for such?

Yeah, an Adult store. Although they definately aren't $5.

I'm really sorry. I just couldn't resist :-)

Conor.