Here are what I usually have in my diaper bag every time we go out.
Diapers x 3
Swaddle , now it’s like a light blanket for my daughter
some hats for sun and winter
Nursing cover for moms x 2 (Double coverage!!!)
Pee pad (pet potty training pads) I put it over any changing table
sun block
diaper bag – a very big one!
baby sun glasses (it was a gift)
Enfamil/Similac formula – 4 oz each package. It’s just easier to handle when being outside. —> I have now switched to use portable formula container so save costs.