Oister: dont buy too much b4 baby is born. When baby is born and u realise u need, still not too late to send hubby out to buy. For me the necessary things r cot with good mattress, sterilizer, pram, milk bottles (dont buy too many for start. See if baby likes first or not), good harversack (as diaper bag.. No fanciful diaper bag for me. I find they only look good but not practical)..
Clothing dont buy too much cos pple may give u hand me downs.
Things i dont find necessary: baby monitor (unless u stay in a 2 storey house. Singapore houses arent that big that u cant hear a baby cryin), baby mobile, baby play gym, hot water flask (those that u have to keep on for
Warm water. Waste of electricity)
For breast pump, i suggest see if can get hand me down first then if used to it, then buy a double pump. Whats works for others may not work for u. My friend swore by medela pump, i use it, i cry ah!! So painful!! I bot a ameda from breastfeeding mother's suppprt group, so much more comfortable..)
If u go for those antenatal classes, they'll tell u what is necessary too.