What needs to go into the "bag" to get ready for childbirth?

Things for baby, mom. An OB provider can tell a patient what to pack for a particular hospital. There are also lists online. My suggestion is to take things that are needed for mom and baby that would be difficult for other family members or friends to find or purchase. A mobile phone and backup camera would top my list along with a pair of earplugs (when sleeping alone, not with baby, of course).