When you're sketching for fun or practice, what are you doing it on, in, or with?

Are you a fan of sketchbooks? If so, spiral or square bound? If not, are you sketching on loose-leaf paper, post-it notes, or digitally?

If you're drawing traditionally, what kind of drawing utensil do you use? Pencil? Pen? Lead type? Mechanical? Wood? HB, color?

If you're drawing digitally, what kind of input device do you have and what program do you use? PC or Mac?

I'm such a whore for the method, so if you've got time to share, please post a comment!