Building stuff from scratch is in, check out this Schmitt Trigger based oscillator synth, housed in an old switcher box. Its no Doo Rag, but hey its a first prototype. I do have to admit that Schmitt Triggers sound pretty nice, will definitely be ordering some to experiment with in the near future. Link to project here:
http://www.livejournal.com/community/circuitbending/208258.html