Bobbin' for apples is a crowd pleaser.
So is rock chuckin' - hang something from a limb and throw rocks at it - perhaps a character portrait of an unpopular individual. Kids love to throw rocks. Make a "Bag Swing" out of a burlap bag, rope, and old clothes. Few kids today've ever seen a bag swing, let alone wrapped legs around one and swooped away. My grandkids have more toys than most stores, but were fascinated by a gosh-durn "wrist rocket" slingshot.
You could also just get a load of dirt piled high and let them be kids. When recess at school includes active shooter drills, we've a major problem. HAVE FUN!!!