Not to beat the merch horse to death, but I have only ever bought lil boo and trick r treat HHN merch. Hat, sweatshirt, sippers, tees. I haven't and probably wouldn't buy other stuff. 31/"traditional" halloween themed stuff was right up my alley.
I realize I'm nowhere near a core demographic, but I guess there is a chunk of us out there very excited about repping our cute pumpkin gear as we trek from creepy house to gory house to demon house and so on