We attend a family integrated church. The children are with us the entire time. We have newborns, toddlers, children, teens, parents, Grandparents all together.
We all listen to the sermon. Then we take a break, eat snack, fellowship, etc... Then there is a short lesson just for the children. One lady does songs with sign language and tells them a story using a flannel board. Again, we are all in there (and you should see how much the teenagers enjoy the flannel!:)) Then we all share prayer requests and pray together or sometimes our pastor leads us through a lesson on how to study the Bible.
I guess we don't really use a "curriculum" but maybe something we do will give you an idea or 2 that you can use!:)