I believe I was 2ish, I remember it was winter and Mom was going to the neighbor's to play cards. She laid me on the floor and wrapped me up in a blanket like a baby and carried me across the street.
I was thinking about this the other day, not the memory itself, but how something seemingly insignificant from your past can stick out so vividly in your memory yet, as Syl says...you can't remember where you put your keys.