Glamourmom nursing tanks
Gilligan & O'Malley Nursing Sleep bras - Target
Bravado Silk Seamless Nursing Bra
2 button-down nightshirts
2 pair leggings, 2 cardigans
Phone/iPad and charger
Glasses and enough contacts for a few days
Toiletries, including Cetaphil face wipes and heavy-duty lotion (your skin will be DRY from the hospital air and especially if you are breastfeeding)
Toilet paper!! You do not want the hospital-grade TP.
Forgot to bring a bath towel! Also might want to pack a blanket for the new dad. Our hospital had plenty of blankets but you never know!
2 newborn sleepers
2 three-month sleepers (we weren't sure how big he'd be and low and behold, he was born almost too big for NB clothing!)
Miracle blanket for swaddling (we've moved to Halo Swaddle Sleepsacks and SwaddleMe swaddles now that we're home)
A couple of receiving blankets
To pack all these things in my weekender, I used a couple of sets of these eBags packing cubes. I can't say enough good things about the packing cubes - they're great for keeping things organized and separating my clothes from Hawkes', toiletries from clothing, etc.
Vanderbilt has a variety of room service food options and snacks available at no cost (outside of the $$$$ we spend to be there!) so I didn't pack any food, but otherwise might have packed granola bars, nuts, etc to have on hand because having a baby for me is like running a race - I am starving and parched for days after! I also didn't pack diapers and wipes because I knew those would be available.
That's it! Hope this helps someone out there!