Baby Help!

So, our little one is doing awesome..approximately 3 lbs. 5 oz. and is very active (doctor said "little gymnast")...so I have decided that I should start preparing for her arrival. I need any and all advice about anything anyone couldn't live without, didn't end up needing, ect. I am about to make the all important diaper bag choice. Originally, I was going to go with a Juicy Couture baby bag, however, now I am thinking I don't actually want to leave that bag at daycare so...ideas...brands...etc. would be awesome! I am not really up to speed on what is "in" for a diaper bag or really anything baby....so HELP!~I have just seven weeks left...plus, I need some things to keep me busy so time goes by more quickly!