Even though most people my age are far out of this habit/phase, I am still known to have a thing for holding my mother's/grandmother's hand when going out into public places, which to me is a very frightening experience, I also like to take my Dilbert books with me everywhere I go, whether or not that could be somewhat a babyish trait, I usually do it for comfort anyway, I also have a thing for crying over the most silliest things, for example, if I don't get my own way, I cry, if I don't get my monthly prescription in time, I cry, if I end up missing my doctors appointment, I cry...yes, from the looks of it, I am pretty much a hypochondriac. Also for my most babyish thing, if I am in a very anxious situation I am quite known to hide behind, either, my mum or my dad and to make nervous whining noises do not help it either.
Yes, I guess that is all I can list for now as I would be rambling.