Big black knickers much better than those disposable ones, especially if you have a C section as they'll pull up over scar.
I was sorry I bothered with a breastfeeding pillow and scarf thingy for breastfeeding. Also found expensive breastfeeding tops a waste of money (the ones where you stick your boob through the hole!). Much better and more discreet to wear a vest which you can pull down & a top you can pull up! Having said that, I think the 'brest vest' is very good as it sits under your bra.
Napisan is fab for removing stains - soakin it then add some to your wash.
Couple of things I didn't know existed but were very handy (all from Amazon)
Water wipes-easier than cotton wool & water, but no chemicals.
Mirror you hang on headrest in back of car so you can see baby in rear car seat.
Hooks you can hang on pushchair to hold your bags.
Bathing - just use water - no need to put anything in bath. If your baby has patches of dry skin use olive oil. No need for soap, shampoo etc!
Babygros that have fastenings at back or pull over the head are a pain for newborns. But now my baby can sit up I prefer pull over head type!
I didn't realise that vests withenvelope necklines can be pulled down to remove if you have a poo explosion to contend with!!