Lunapads are washable, reusable menstrual products — the feminine hygiene equivalent of cloth diapers. I've had several friends tell me how wonderful they are in terms of comfort and value, and then Kelly wrote in saying how useful they'd be postpartum. In case you've forgotten, after the baby's born, one must contend with a several-week long case of "spotting." Lunapads are an ideal alternative for that time. Another alternative: Lunapanties.
Great tip, Kelly — thank you!