My shower staple is a nursing care package whether you are planning on nursing or not, LOL. Gave my sister one, she love it and used it!

Great stuff inlcuded up there already...
Breast pads
Larger recieving blankets-i had to wrap Joey up to get his hands out of the way, and the store recieving blankets were too small.
I LOVE the chart section in Bon appetit baby--You record when you nurse and how many wet/poo diapers you have. Now, I don't think you should be crazy and watch the clock, but if you are worried and need to count output, this is great! It REALLY helped me, and my sister loved it too-there was no Q about whether he was getting enough or having enough wet/poo diapers-it was all blatantly there!

tip sheets-that is a GREAT idea-contact LLL for some--I liked...the poo/pee handout-actually-you'd be surprised by what constitutes a wet diaper! How to wake a sleeping baby, the latch sheet.