Cozy socks since it gets cold, a nightgown if you want to be in your own instead of the hospital robes, go home outfit for you and baby. I purchased some plain hanes panties as well, the 5 pack of solid colors, super cheap, so i could just throw them away and not ruin any good ones of mine. I also packed a snack bag for my mom and hubs as well as granola bars and belvitas hospital (mine at least) offers meal but in labor i think you just want a few bits of something to give you energy and keep you going
I would say baby nail file since you are not supposed to use clippers ers that early. Mine didn't have anything for nails. They also didn't provide lotion and my baby was very dry.
Some things I found helpful that I didn't find on any lists were tissues (hospital ones aren't the softest), chap stick, and baby nail clippers. Hospital didn't supply them and my little guy had long nails at birth! Check out some lists on Google though, they are helpful at getting you started!
I googled and found a few really good lists. Depends on your hospital, but some supply shampoo, soaps etc. Some don't.