Baby backpack carriers are a perfect option for the older baby (6 mo+ - or once baby can sit unassisted). They get a fantastic view, but are still close to mom or dad. And, baby backpack carriers can be used for quite awhile; many families use their baby backpack carrier from 6 mo. or so, until the child is 3-4 yrs old.
Most baby backpack carriers offer great stash places for things like water bottles, snacks, diapers, toys, etc. And some baby backpack carriers also come with a rain/sun shield as well as a change mat and water resistant pouch.