For my son's second birthday I added to our "baby book" collection. "Kiss,Kiss Goodnight" is a Ken Nesbitt book. He read this to my Kindergartners before it was a published book, straight off his phone. It's adorable.
This is a wonderful gift for a baby shower.
We also got him "The Goodnight Train", illustrated by Laura Huliska-Beith. My son is really into Choo-choos. This was probably his favorite birthday gift.