I want to know where to find some decent audio oscillators i.e. board or pedal. I have looked everywhere and found only a few things that don't impress me much I vaguely remember a web page that sold weird effects like this called something like 'Zebra sounds' and I was wondering if anyone knew where I could find a good internet site for them.

I have a Zvex Fuzz Factory and got the idea from the self-oscillation you can harness with the pedal.