I have been trying to do this theme for so long (ever since I first saw it done on Hostess with the Mostess) and when my lovely sister-in-law first learned she was pregnant and was having a boy, I along with my husband, insisted that she do this theme. I was able to download and print the pictures that were in the frames from HWTM's site (Thanks guys you rock!). I have to say that it came out fabulous, I couldn't be more happier with the end results.
Here is a listing of some of the places where I purchased some of the decor:
ZGallerie
Home Goods
Ross Stores
Amazing Savings
Marshalls
TJMaxx