Has anyone tried plugging the SID output into a Stylophone Pocket Synthesizer (or vice-versa)? It's a repro of the 1967 original, so it was around 10 years before even the PET was built, which makes it period-authentic.
Only $20 at ThinkGeek, so I'm tempted.
http://www.thinkgeek.com/electronics/musical-instruments/aa64/ (http://www.thinkgeek.com/electronics/musical-instruments/aa64/)
(http://www.thinkgeek.com/images/products/zoom/aa64_stylophone.jpg)
Looks like it's sold out at ThinkGeek, but Restoration Hardware has it for $9 more:
http://www.restorationhardware.com/rh/catalog/product/product.jsp?navAction=jump&id=prod1644188 (http://www.restorationhardware.com/rh/catalog/product/product.jsp?navAction=jump&id=prod1644188)
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