Ohhh good! I need a memory refresh too! I'll see if I can remember.

5 Things I couldn't live without:

1. Dummies: I was adamant I wasn't going to use a dummy, but bub was a comfort sucker, and life just became much easier!
2. Ocean Wonders Aquarium & CD player with 'Music for dreaming' cd: The music was a good sleep-time cue, and if I left bub in a dark room he'd fret sometimes - the lights on the toy gave him something to watch, and by the time it turned off, he was settled. He still plays with it at 17 months (when he hasn't worn out the batteries from constant pressing!).
3. Glider chair: I probably could have lived without this, but I really enjoyed putting my feet up and rocking during feeds/settling - I was comfy enough to nap too! Also having somewhere comfy to sit while helping bub to self settle (or just somewhere to sit while watching him sleep ).
4. Baby rocker with vibration: Great to have somewhere for him to be if he was awake when I needed to be doing something like cooking/showering - he just wanted to be able to see me.
5. My mum/dh/family/friends: Cooked meals and brought frozen ones over, came and did dishes and washing, watched bub while I napped, did a night feed so I could sleep through. ASK for help, don't let people visit without doing a job 'yeah you can see the baby, and can you bring milk, bread, and 4 cans of tinned soup on the way?' Seriously, do it.
6. (I know you said 5 BUT) Digital Camera: They grow and change SOOO quickly at the start, have it always charged, always out, always on hand ready to go. They'll never be that little again.

3 Things I didn't need:
1. Baby monitor - I didn't buy one, was meaning to, but bub's room was near ours, and I didn't count on developing 'mother ears', where I heard every snuffle and sigh.
2. Booties/rubbish socks: Some socks are great and stay on - most fall off. When you find socks you like (bonds usually are good), get them.
3. 0000 clothing: Bub was 9.4 lb, so lots didn't fit even from birth! My advice is to get one or two things in that size, and if bub is small enough, send mum or dh to the shops with that item and say 'get more of these'.

I reckon perhaps research even the things you might not be intending to buy (things like glider chairs, feeding cushions, baby carriers, dummies, monitors, change tables, baby baths, cradle/bassinet) - so that if you decide after bub is born that you want/need something, you can just send someone else out with all the information - and say 'come home with this chair' or 'I want these dummies'. Rather than wondering what the best ones are when bub is 2 weeks old, or spending ages browsing/shopping yourself!