When the boys are in their bedroom discussing the matter, Peter has his sleeves rolled up. Then when the boys are in the girls' bedroom they're pulled down, then immediately after that in the bathroom his sleeves are rolled up again.
The mechanical elephant changes positions on the floor between shots when no one is playing with it.
When the man in the toy store finishes with the woman and girl there is nobody in the background then after showing the close-up of Bobby's face the next shot shows a boy looking at some toys back there.
At the beginning of the show, Cindy is singing "Rock A Bye, Baby" to her doll. Carol and Mike stop to listen and smile; they share the joke about all the bottles and all the diapers, and then we again hear Cindy singing as she incorrectly finishes the lullaby:
"Down will come cradle, baby, and all"
But as Cindy is about 6 years old she probably doesn't know the words correctly.
"Down will come cradle, baby, and all"
But as Cindy is about 6 years old she probably doesn't know the words correctly.
After searching their bedroom for the missing doll, the boys exit their bedroom and turn right into the hallway to head downstairs. To get downstairs, they should have turned left into the hallway when exiting their bedroom instead.
Immediately after Bobby's kazoo disappears and he accuses Cindy of taking it, Carol walks into the room and says "I've searched the house again, no doll, no kazoo." She couldn't have known the kazoo was missing, let alone searched the house for it that quickly.