With DS, I tried using a small wool puddle pad with a cotton blanket over the top (to put under him when he was sleeping). He was always a big diaper leaker, so I needed something underneath. The wool didn't work for us, though. I am very sensitive to wool, so one problem was that if I was touching the wool pad (even through the blanket) I felt a little itchy. My son didn't seem uncomfortable, but after a couple of nights he had little tiny bumps on his skin. I never sorted out if the wool was the culprit, but since it was making me itchy I ditched it and used those crappy plastic-y pads from BabiesRUs instead (yuck). #2 is on the way, so I'd like to figure something else out.
Does anyone have a natural-fiber solution that doesn't involve wool? I know that cotton would just absorb the leak, but maybe there are pads that have cotton lined with something safe/natural? I'd like something that I could lay down in the cradle (if by some miracle this baby is a cradle-sleeper), or lay down on the bed if he/she ends up sleeping with me.