This is what I brought & what I also tell my Lamaze clients to bring:
- pillow in bright pillow case (so it doesn't get mixed in w/hospital laundry). Keep your pillow near your head & theirs between your knees, LOL
- music/cds
- camera, batteries, charger, film, etc
- clothes & pj's for dad/coach (it's no fun for coach to be wet from helping you in the shower or after being barfed on, ROFL & the nurses really prefer not to have little surprises when the come in to check on you at 3am, so he needs PJs,

)
- clothes for you to go home in (baggy, comfy)
- phone list for dad, he might forget important numbers after hours of labor & all the excitment
- calling card - in our hospital, only local calls are free & you can't use a cell phone in the hospital
- car seat - MUST be installed, don't show up w/it in the box, the nurses can't help you

- clothes for baby to go home with
- toothbrush (for you & dad), hairbrush, shampoo, etc
- socks
- massage tools, birth ball if you want to bring your own, etc
Stuff I ususally tell people to leave at home:
- PJ's/nightgown - I'm doing a different way then the previous 2 posters, BUT, I feel like it's much better to wear the hospital gowns for a couple of reasons. One is you're bleeding SO much after birth, you may end up ruining your nice new PJs & who the heck needs more laundry w/a new baby. Also, They're SUPER easy for nursing, just unsnap at the shoulders. Honestly, those first couple days of nursing, you already feel like you need 7 hands, you don't want to worry about holding up your PJ shirt or nursing nightgown slit open. I usually tell people to save the PJs & that 1st Saturday that you're home w/the baby everyone will want to visit you. That's when you wear them!!!! If you're dressed, people expect you to serve them coffee, if you're in your PJs, they'll clean your house & don't blink when you tell them you're going to take a nap :LOL
- book, magazine, etc - when the heck are you gonna read it?
Just remember, less is more, you're only going for 2-4 days, & it's not club med. You always end up w/more stuff coming home.

good luck!!