Round 2 must have baby items

My daughter is 2, my step son is 5 and I feel like we have every damn toy known to man. I tried to save as much as possible from my daughter but people are starting to ask what we need for this next baby. Realistically I feel like there's not much we need. After have one I realized most things aren't necessary or worth the money.

So what is on your must have list second time around??

I have 2 things lol

*sit and stand double stroller

*new sound machine