Corn or find where their are acorns dropping.
Real apples are about as good as it gets. The rest of that stuff is more to get your money than to draw in deer. There's no substitute for quality scouting, smart set ups, real apples, acorns and golden acorns. Anything you buy off a shelf at Wal-Mart is best left on the shelf IMO.
Good luck with your 5 year old. My daughter is 3.5 year old has been out with me once and is asking to go again. Spending time with our kids in the woods is as good as it gets!