Here's my tuppence worth:
More bibs than you can shake a stick at. We found that at about 4/5 months old DS got seriously dribbly when eating - he's ff.
From the word 'go' DS hated, and I mean haaaaaaaaaaaaated, the bassinet/cot/playpen. Playpen is on e bay, cot still boxed up with all the bedding/matress/bumper etc, such a shame but he wouldn't settle so we co-sleep.
Bought nursing bras, couldn't bf. Luckily hadn't taken them out of the box and could refund. Hospital provided milk until we left (even gave us a couple of bottles to take away with us). It's perhaps worth looking at sterilisers that take your fancy and make a note, that way if you find you can't bf you'll be able to get something that suits you at short notice rather than DP/friend/mil buying something on the advice of a shop assistant who might be clueless. (Ispeak from experience).
Ikea do (did?) a cute flat frog which is soft and green one side, soft impermeable plastic the other, rolls up really small and is light - it's a really good changing mat. Once DS could turn over, nappy changing time became impossible on the changing table, so frog-on-the-bed it is!
Babygym great idea, as is a babyy bouncer/bouncy seat/hammock thing (I live abroad, not sure of English words for some of this stuff!).
Sling really useful to keep baby close, we found it great for helping with colic.
We found babybath a waste of 10?, we climb in with him, easier to hold a slippery fish covered in Johnson's!
Antilop high chair (ikea) obviously you won't need for some months.
You'll probably get a cushioned changing mat in the bag with your pram, double check to save buying more. Mine was quite plain so I made one much funkier!
Grobags/sleepsacks are fantastic for keeping baby cool/warm/safe.
Long! Sorry.
Congratulations and good luck