I've seen the HP films zaidi times than I can count but there are still some things that are hard to notice until you're like, "bajillianth" time watching the movies. I had an HP movie marathon recently, and I was so surprised kwa all the things I'd missed. Here are some that I noticed. (By the way, I didn't notice all of these--I don't think anyone could notice all this just kwa themselves--I only noticed some of them, and afterwards my Marafiki told me some things they noticed, to help with this article)

Philospher's/Sorcerer's Stone:
1) Harry is wearing the sweater Mrs. Weasley made for him in...