Is this a cute idea for my sisters baby?

My twin sister is pregnant for the first time and she is so happy and will be the best mommy. I am throwing her the shower and I want to get a little box and put some shower mementos, invites, and all the photos in the box.. or maybe into like a scrapbook? Is this a cute idea? Just as a little thing to make her smile. Or do you think that’s something she will want to do on her own? I don’t want to over step since it’s her first baby but I want to do something special to remember the shower