Any merchandise relating to Dr. Hannibal Lecter. Examples of Hannibilia include action figures, masks, photo prints/posters, t-shirts and tattoos of Dr. Lecter.
Taken from the name "Hannibal" and the ending of "memorabilia".
Person X: "How annoying. This year's horror convention hardly has any Hannibilia."
Person Y: "That's because you bought it all last year!"