I am graduating at the same time as you and I got my NRP certification. It wasn't at all difficult, it's just like CPR. Although I may not be able to do a mega-code as well as a seasoned nurse, I have the skill set. I have also never done CPR but I have the skills.
I had the thought that it might help with the job search also. Like you I am trying to break into OB. I figure at a minimim if they were choosing between me and someone else it might give me a little boost. I also just got a little bogged down in med surg and it was a boost to get to do something OB related for a couple of days.
As far as what you can do, I would recommend becoming a doula or certified lactation educator from CAPPA (CAPPA - Childbirth and Postpartum Professional Association
). I have done both and my instructors seem to think that will help in the job search, not to mention made my OB clinicals much easier. The lactation educator is not nearly the same as being a lactation consultant but it gives you a fantastic background to help with breastfeeding and can be a good stepping stone to IBCLC if your're interested in that.
I am also a mother of two young ones and it is tough to squeeze all this in on top of nursing school. I am soooooo excited to graduate and get where I want to be though.