Babyshower gift ideas for a girl?

I'm going to this ladys babyshower and I really don't kno what to get her baby as a gift she already has a babygirl so I figure she has all the babys old stuff so idk and I wouldn't kno what babys need kuz I dnt have any kids of my own mayb diapers or a gift card I love wrapping gifts so I perfer to get her a gift but I also dnt want to spend more than $30 u hope I ddnt get u guys confused