Purim was this past weekend (long story, but it's another one of those Jewish "They tried to kill us. We won. Let's eat," holidays only add costumes, noisemakers, yummy cookies and drinks for the adults).
Our synagogue did a fantastic Harry Potter themed Purim celebration. The kids received letters inviting them to attend Hogwarts Hebrew School. At one point, our rabbi referred to it as, "Hogwarts School of Witchcraft, Wizardry and Talmudic Studies." Ha! The kids came dressed as their favorite HP character. They were sorted into houses. They took classes and had Quidditch practice.
I arrived at Hogwarts complete with Harry, Luna Lovegood, Hermione and an angry pink owl. The three biggest ran around the entire time shouting spells at their friends. The youngest just shouted at me on occasion because she didn't get nearly enough sleep the night before.
You see that one dressed as the always bizarre Luna in the middle? That's my E and she's ALL about Harry Potter. All the kids love it, but E lives and breathes those books. She remembers the smallest details too. She got the highest score possible in her "History of Magic" class at the Purim celebration because she remembered things word-for-word from the books. I was super impressed.