Thanks to Cathy for this Frugal Baby Tip!
If you could get your hands on some untreated bourette silk, you could make some wonderful nursing pads. Just cut several circles, stack and sew around. To make them breathable and still waterproof, add a layer of 100% wool as the outside layer.
This silk still contains the natural silk glue which is said to have soothing and healing effects on sore skin (Great idea for silk liners for sore baby buns).