Guys I used to blow dry and flat iron my hair every day and I haven't done it at all since the day DD was born. I have to get up at 5am to make it to the office on time as it is, and that was the easiest way to cut 15 minutes out of my routine! I'm pretty sure I brought but didn't use makeup too. I basically stayed in my bed in the hospital gown for the first day (DD was born at 11:55pm so my first "night" at the hospital barely counted) and I showered the morning that they were going to release me (I got out of there around 4pm). I just put on sweats and threw DD in a onesie...nothing special.
Good things I did have with me were: nipple cream, nursing pads, my boppy pillow, extra pillows for DH to sleep on (the hospital pillows given to the husbands to sleep on are terrible), two potential going home outfits for me (one was sweatpants the other a t-shirt dress, in case I needed a CS and waistbands were unacceptable), a swaddle blanket and onesies for DD to go home in (one in NB size and one in preemie - DH was a really small full term baby and I was average size, so we had no idea what to expect), change of clothes for DH (we realized about 12 hours after DD was born that he had cord blood on his shirt...it's in a lot of pictures haha), shower toiletries (because they have soap and shampoo at the hospital but it sucks). I had about 100 other things in my bag that I never touched, like the Kindle that I figured "I could read while I'm in labor between contractions" hahahahahahaha what a joke. Maybe if I'd been induced and knew I'd be there a while that would have been nice? A water bottle may have also been nice, since continually filling up a 10oz plastic cup PP was pretty annoying. OH and stool softeners...I started taking those right after delivery. Max dose of OTC stuff.