In the context of the story, my favorite spell is Wingardium Leviosa. One of my favorite scenes is when Hermione is instructing Ron on how to pronounce it. "Win-gar-dium Levi-o-sa."
Favorite spells that I wish I had in real life: Accio and Reparo. Heck yes. I break things; I wish I could fix them with a snap of the fingers (and sometimes just being able to repair something at all would be great). I'd also like a spell that gets things for me. When I don't want to get out of bed, when I can't quite reach the item, when I don't know where it is. It would be nice.
Magic. I wish it was real, sometimes. ;)
This is #30. I am done. I reached my goal. I didn't quite make it sometimes and had to do two the next day, but I survived. I'm going to miss doing this everyday (or almost everyday!). I might look for a more general one to do in a few days or weeks.