I also didn't end up using much of what I brought. I was so tired I slept most of day 1 and often day 2. I went in comfy clothes, comfy bra, socks & sneakers. I brought a brush & hair ties, toothbrush & toothpaste, lotion & moisturizer, lip balm, phone, charger, clean shirt, undies & socks, slippers, charger, phone, & heating pad. I also brought a journal and pen (didn't touch those). Basic toiletries, phone & charger, undies & socks are musts. My lips have been really dry since surgery & often after drinking protein shakes, so chapstick or lip balm are good to bring. I didn't use the heating pad there, but I did at home.
Wishing lots of luck for a successful surgery & easy recovery!