I would take V pillow like you said, a blanket and or dressing gown. A loose zip up sweatshirt, Vaseline/lip salve, scrunchy hair band, ear phones or mags in case you have a long wait and comfy shoes like uggs or sliders when you leave!
I also took a little bit of makeup and put a bit on before I left (only like concealer lipstick and mascara 🤣) and deodorant and body spray as you can’t put deodorant on before so Wanted to freshen up! This last bit was just personal choice not a need haha x💕