grobags - no faffing with teeny or enormous blankets :)
sling gets another vote - when my baby went through super-clingy phase at around 3 weeks, I could keep her close whilst still going about the house etc.
maclaren xlr - great to have manageable carrycot that she could sleep in at home, then bung it on a not-too-heavy foldable buggy without waking her up, to go out.
doomoo beanbag - still uses it now at 4 years!
lots of very tasty, super foods, all packaged, from somewhere great like M&S - keeps you going when BF or generally knackered with minimal faff.
a tumble drier (wish I'd had mine then - amazing how much washing a NB gets thru).
friends/family who can pop 'round and look after the baby so you can get some sleep = godsend.
wish I'd had an iPad then - could have kept in touch with outside world so much more easily whilst chained to sofa BF :)