I think its a lovely gesture.

My baby shower gift from my SIL was a big ol' bag of things she couldn't live without when she had her girls and i used everything in it! I loved everything and it was all stuff i didn't know i would need but turned out i did!

If shes had a traumatic second birth experience i think something like your gift will take the hassel off having to think about things. Even if they are things she wouldn't go out herself and get atleast they are there to try and she may end up loving them.