Help me out..

What in the world are you all packing your babies to go home in? My last baby was born in April so I don’t have experience with a newborn in August.. I bought her a short sleeved onesie and a bow thinking that would be enough but now I’m thinking maybe not because it will be AC in the hospital and in the car ride home. Of course she’ll be swaddled up and have blankets but should I buy her a hat? Pack socks? Mittens so she doesn’t scratch herself obviously but I don’t want to pack multiple outfits.. thanks!