Any baby related items I could give to my two nephews to announce to them? I’m giving them a shirt…

Any baby related items I could give to my two nephews to announce to them? I’m giving them a shirt that says “cousins make the best friends” but want to add something else to the bag. Kinda want some stuff that’s a little less obvious like why am I getting this, and then they see the shirt and realize what’s going on. Help!!!