Playing piano with a baby

My 5 month old baby LOVES playing piano.

Yup, she pretty much just bash keys, but she seems to get a bit of a sense for the sound.

I used to play when I was a kid, so can read music, but am rusty.

Looking for some ideas on how we can play together.

Anything from me playing chords that kinda match the notes shes playing, or some style/songs that we/I can try. Maybe there are perticular chords or scales I could practice while she's hitting her notes.

Shes super young, but its a nice way we can have fun together :)