Hat, sunscreen, bug repellent, warms clothes / pj's for chilly nights, smores makins» (yes this is a must have), sleeping
bags & blankets to make one big family bed
in your tent, life jacket that
fits really well,
diapers (we still cloth
diaper if we are camping near laundry facilites), swim
diapers (or we just use a pocket
diaper without an insert and find that it works really well to contain what it needs to and doesn't bring on lots of water), first aid kit, flashlight, rain gear, a way to get clean water (filtering it yourself or access to water at the campground), snacks, and a good campsite.