Having gone on the hunt for a engagement card for a friend I realised that I really missed Paperchase (stationary shop in England) where you can go in and easily select a greetings card you like for most life occasions. It was a struggle to find one I liked in Melbourne and having gone to 5 or 6 shops before finding one with cards I liked here is a list to save you the frustration.
David Jones in Bourke Street has a card section on the 5th floor with a good select especially if you are looking for a birthday card.
Dymocks in Collins Street has a good selection of Moleskine notepads and journals. It is also a good bookshop (Reminded me of Waterstones).
Book Binders Design in Little Collins Street has a rainbow array of different colour, size and type of journals all beautifully presented and customisable.
Zetta Florence in Fitzroy on Brunswick Street is the kind of shop that you could take a while browsing. It has a great selection of gift wrap, gifts, posters, maps, journals e.t.c.