Diapers, Diapers, and more diapers.
At an average cost of $70 a month, and gifts of diapers were appreciated. I giggle, though, because my first box of gifted diapers lasted barely 1 week.
If you can, a box of diapers in each size so they don't have to run out to the store to get the next size up when they discover baby has grown. Clip and use coupons to help reduce that cost. Two boxes of newborn diapers should last a couple weeks and will really help reduce the cost of newborn baby.
Good luck and congrats to the new mom!
Enn the flower grower