Which one of this packs is essential to your gameplay?

I would say it's a tie between kids room stuff and backyard stuff. I wish the toddler back came with a few more objects for toddlers. I mean why balloons, weird looking logs things and other stuff that has nothing to do with toddlers. I would have rather had toddler decor items that I could have used in their bedrooms or outside. Like pictures, blankets, and toys.