Mason has school pride for his "house" at Hogwarts School of Witch Craft and Wizardry (oh his "real" school too).
My little medium man is such a fan of the Harry Potter books. We've read the first two and are on the third. I have a rule that if any book is (ruined as all books are) in a movie, he must read it first. It is easily his favorite time of the day and always there are cheers for "more, more, more" before I kiss him goodnight.
Being all things Mason, he needed "things" that were Harry Potter-ish. Actually, he is more of a Weasley fan and insists that I act like Mrs. Weasley and make him buns soon. He thinks it would be so great if I could have a knitting spell like her. I agree!
Thus, a very Gryffiindor sweater was made.
I used the TAMA pattern by Kelly Brooker. It is fantastic and organized by different weights which makes it so easy to read. Considering I've already have an order for a Ravenclaw one to be made by the oldest, I'm sure I'll be knitting it lots more times.