I made them for myself and that is saying something since I am a shocking sower....sewer....however you spell it!!

I just got a thin-ish washcloth and cut a rectangle and then folded it in half so it was a square of the breat-pad size. I sewed it almost all up and then filled it with rice and then hand-sewed the last bit.

The rice seems to heat really quick, so you don't have to micro them very long. If you want to get clever, you can put dried lavender in there for nice smells, but I was slack and didn't- the rice smells a little "ricey" when heated, but its ok. They felt good when bf-ing.