TJ just moved to the 2 year old room last week. He's always had a bag to carry his stuff in but we decided it was time for an actual back pack (mostly because the bag seemed so babyish to me). I was not prepared for how grown up he would look with it though. Made me proud, happy, and sad all in one breath.
(Yes, those are his jammies...we seem to live in our PJ's here)