Sometime in my dreams, lucid and non, I fly by flapping my arms while holding the corners of a blanket, as if I had wings. I don't consciously choose to use this method in my dreams, it just kind of happens because it's something I use to do when I was a kid, to pretend I had wings, like a pterodactyl or something. It's funny how these things stick with you, even 20-something years later.