If you want to pack light, here's what experienced parents consistently say they actually used. A long phone charger. Their own pillow. Lip balm (hospitals are dry). A comfortable going-home outfit that fits over a postpartum belly — think loose sweats, not pre-pregnancy jeans. A nursing bra if breastfeeding. Toiletry basics: toothbrush, deodorant, dry shampoo. Snacks that don't need refrigeration. One going-home outfit for baby. The car seat (installed before labor starts).
That's roughly 10 items. Everything else — the hospital gown, mesh underwear, pads, diapers, wipes, blankets, formula, peri bottle — the hospital provides. You can add comfort items from there based on what matters to you, but this core list covers functional needs.
The one category worth investing in: good postpartum underwear and a comfortable nursing bra. Hospital mesh underwear works fine for the first day, but if you're staying 2-4 days after a C-section, having your own comfortable, high-waisted underwear makes a difference.