"Oh! Yeah, hang on," Sirius pulled away to dig through his inner pockets, but he still didn’t sit up, "A-ha!’ Harry blinked in surprise at the object that Sirius brandished above his head; it was the mirror that Sirius had given him years ago, "Now, this is the mirror that your father and I used to use to communicate when we were in different detentions," Sirius grinned looking up at it, "They’re a matching pair, you see? I remembered them when I was trying to think of a way we could speak without worrying about that High Inquisitor woman reading your mail. I have one, and this is your father’s," Harry accepted it reverently, turning it over in his hands, "all you need to do is say my name, or Moony’s, and we’ll know you want to speak to us,"