ETA: Interesting gift idea I just noticed for the Potter fans: the Alivans.com wands are great and come in a variety of woods and shapes, but they range from $27-65. At Noble Collection, they have replicas of the Prisoner of Azkaban wands (Ron's, Harry's, and Hermione's), which are apparently more intricately sculpted than they were in the previous movies (Hermione's has vines carved on it, and the boys' look more like rough, natural wood). Price? $29.50. Also? The Time Turner is only $49, which is positively inexpensive for these people.
I've yet to see a good blue-and-bronze (not -grey) Ravenclaw scarf, though. Anyone have good recs for Ravenclaw merchandise?