One piece of advice I would give to parents-in-waiting would be, if you have a newspaper subscription, don't waste your money on a diaper pail. Instead, dispose of dirty diapers in plastic newspaper bags. Start stockpiling them now, and you'll have plenty when your baby is born.
I have an impressive collection of these, but I recently realized how habitual my hoarding is. When I unpacked my groceries yesterday, I was excited to find a few items packed in small plastic bags, and immediately thought, Martha Stewart style, these will make perfect shit bags.