3 things you couldn't live without

My step daughter is having her first baby. It was unexpected, they are young and don't have alot of money. I'm trying to help her get everything she needs. I noticed when I had my own baby that there was a lot of things people recommended to me that I didn't like or my baby didn't like. But everybody's different and so is every baby . I don't want to just only tell her the things that worked for me. So,what are the top three things that were an absolute must for you when you had a baby? I'm not talking about diapers, formula or breastmilk. At least not in the general juju c sence... I'm talking about specific things that were the best. Thank you so much!