My husband and I really like the clean lines of modern pieces mixed with unique antique pieces.
We bought the crib first and then designed the room around it.
Crib -Dwell Studio for Target (target.com)
Painting - original (lesliecalcote.com)
Chalkboard -plywood, frame of your choice and chalkboard paint! (homedepot.com)
The long shelf is my favorite thing in the room, it was something I had seen on PN and my husband duplicated it for me!
Find things in a high end store that you love and shop until you find them elsewhere or create it on your on!