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The most likely answer is a fruitcake, which is a very common Christmas present. It is confirmed in the original Vacation from some dialogue with Aunt Edna that the Griswolds do give fruitcakes to their relatives as gifts. This would also explain the Boss's lack of interest in the gifts.
Carre Otishttp://www.imdb.com/name/nm0652895/Picture: http://images.fanpop.com/images/image_uploads/Carre-Otis-guess-442412_ 651_865.jpg
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