Diaper bag must haves

So excited that in about three days we will be parents a newborn and a toddler, but I’m also at a loss for what to have in our diaper bag for both kids. I don’t know want to be hauling around random stuff, but I know if I don’t bring something we will end up needing it. Can you ladies please list your must haves for toddlers and newborns or if you only have a newborn or a toddler that’s fine too. I’m not a minimalist packer but I also like to hear what other mommas bring along to give me ideas and help out my overpacking.