Mind you, it can't be large, or highly expensive but here's what I have.
My pastel organizer that has blocks, some little people, a lalaloopsy doll house, coloring stuff, and my little clothes in it.
I have a small polka dot trim on the wall behind that.
I have a colored foam block mat to mark my "nursery" boundaries.
I have a mobile mounted onto my organizer so I can lay under it (which is fabulous and I love love love it.
But I feel like it needs something more, I just can't decide what. Nothing can be crazy permanent because if need be I need to be able to move it into the closet for when other people are here.
What's your nursery like?