Babies need lots of little quilts, and not just for the bed. There needs to be one in the car, one for grandma's house and/or daycare, and several to lay on the floor for "tummy time" and playing. You don't necessarily have to stay within the green/rattan mid-century/boho parameters in order to make a cute quilt the mom will love using.
I have been saving my favorite designs on my Pinterest page. Look here and I'm sure you will get some great ideas.
https://www.pinterest.com/bonbonevans/childrens-quilts/