mel, did you get the show bag with your booking in appointment? They used to come with a J&J booklet and in that it had a comprehensive list that you could just check off.
There's lots of threads in here about favourite items and wastes of money too.
All depends on your preference and your budget really.

A friend of mine said they don't hand the bounty bags out anymore. Is that true???

I'm with Sammyjane - The t-shirt body suits are good. I put them over the singlet & under all his clothes as the singlets come up too easy.

Sleeping bags. From Big W or somewhere. They are like dressing gowns, but are sewn up at the bottom. I've got one that has holes in it for the pram & car seat strap. Its a really good idea as you don't have to unwrap them in the cold to put them in the car.

Wipes. I always forgot them.

A few cloth nappies - even if your not planning on using them. Spew rag, & nappy free time.

Dummies & bottles - even if you aren't planning on using them. You never know what will happen.

Bum cream - I find Sudocream the best, but there are heaps to choose from.

HTH.