For instance, on The Grandmother, we didn't have a reverb unit, so we made reverb by putting speakers in the air ducts, and then re-recording them on the other end of the air duct-- doing that 10 times to get a real long reverb. It sounded really good, but it was just experimenting and getting sound to support the ideas.

That's awesome. Necessity, the mother of invention, often leads to greater things than the convenience of modern technologies.