I was just reading an article about children developing an attachment to certain objects just earlier today. It stated that it usually occurs around 7 months or so. Then I went in to check on AJ and he was laying on his back with his Cookie Monster on his chest hugging him close (the picture above is from a couple days ago).
When I was little I had a blanket that my Mom tells me she received as a gift (I'm guessing a baby shower gift). I still have that blanket and it is so tattered and torn. The satin around the edges has been sewn back on several times in a rainbow of colors. I loved that blankie and it just seemed to make everything OK. I think that AJ has found his "security blanket" or Security Cookie Monster.
It's so sweet when I put him to bed he grabs Cookie monster and hugs him tight to his side. We'll see if this changes but as of now it's the soft, cuddly, blue Monster.