Build your own electronic instruments
In 1979, a book written by P.K. Sood called “Electronic Musical Projects” was published that contained plans and instructions for building all sorts of DIY electronic musical devices. It’s got plans for projects for all sorts of stuff such as guitar effects, filters, oscillators, metronomes and even a simple organ.
I had a copy of the book when I was younger, and built many of the projects. Welcome to 2010, and here’s the book, converted to PDF, and all for free, enjoy:
Even if you don’t feel like building any of the projects, it’s a great read and gives some great insight into how some of the circuits work. Fascinating stuff, and because the basics of analogue circuitry haven’t really changed much, it’s pretty much as relevant today as it was back then.