So my 4yr old has told two santas (with about a week inbetween) that
he wants a toy car that goes choo-choo.  Even the santas questioned
whether he didn't want a train - he was pretty specific.

So I can't easily dismiss it as merely a whim of the moment.

The easy way out is to buy both a toy car with sound and a toy train
with sound, and swap the modules (Maybe put the train with car sounds
into a toy donation box...?  ;-D ).

Alternately I can spend $30-$80 on a 'professional' sound generator as
used in model trian layouts.  A little on the expensive side, though.

But I'm curious what options are out there now in terms of building it
myself.  I can use a PIC and a few different methods.  There are sound
chips available elsewhere.  What have you all been doing lately to
generate sound?  The only reason I might not do this is time - to make
it very low power, sound good, etc I would hae to spend more than a
little time doing the design right.  On the other hand, if done well I
can see it as something I could add as a kit to my website for others
who find themselves in this bind.

Brainstorm away!

-Adam

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