Abigail & Sirius.
Something about Abigail's quiet horror that he hadn't been able to go online made Sirius bark with laughter. "Most wizards where I'm from don't even know how to use a phone. I was high-tech for having a bloody pager," Sirius said, an unusual hint of self-mockery in his voice at this admittance, though he smiled as he said it. "Wizards primarily use owl post to communicate, so I've written a lot of letters in my day. James and I made a pair of mirrors that work more or less like videophones, but the twat hasn't got his half with him, so mine's useless."
Talking about James reminded him that he hadn't seen him for going on half an hour. He casually finished the gift he'd been working on, and then leaned back to do a quick but thorough scan of the workshop for his best mate. "It's a complicated charm but I can definitely do it for anything non-magical and inanimate," Sirius confirmed idly, half-wondering if there'd be any point in making a rough version of the Marauder's Map for Santa's village. Or maybe they should just make another pair of charmed mirrors? "Animate things are trickier, magical anything is a case-by-case."
Not wanting to use his Patronus in front of all and sundry, Sirius ripped off a piece of wrapping paper, wrote a note out on it with his wand and then stuck his wand into the toy box to see if there was that would suit his purposes. He was still listening to Abigail, though, and chuckled at her guess. "I don't pay much attention to the law back home, luv," Sirius confided, almost charmed at the thought of that. "Lot of bollocks, most of it, and you only get in shit if they catch you breaking it," he paused for a moment to transfigure the fluffy toy into a small owl, and handed it the note. "James Potter. Wait for a reply."
Once it had zoomed off, Sirius turned his eyes back to Abigail, curious now about what she'd said about being different. "Are you different, then?"