I've got to the age where I might be mixing up birthday presents with Christmas ones. (My best birthday present was definitely, at the age of 11, a beautiful puppy).
However I think that my Scalextric set was a Christmas gift; that's definitely near to my list of all-time favourites. (It wasn't until several years later that I found out that my father had been forced to give up his hobby of photography, through selling his camera, in order to pay for that Scalextric set).