Cas
It's already Christmas Eve and you've only just finished sorting out your presents for Sam and Dean. You've missed your wings countless times since losing them, but never as fervently as you do now. Gift-sourcing would have been much easier with the entire planet available for browsing.
Having quickly wrapped the presents and placed them carefully under the tree, you head into the kitchen, hearing faint music coming from it. Dean is in there, a box of breadcrumbs in his hand, his laptop showing a recipe for stuffing and playing a lively song. It's a female voice and it's clearly a Christmas-themed tune about rejecting gifts in favour of winning the affections of a loved one. Dean's back is to you but you can hear him singing along to the song, his voice slightly off-key but generally pleasant:
"Oh, I won't ask for much this Christmas... I won't even wish for snow..."
He measures out the breadcrumbs as he sings and shakes in some herbs. You lean against the door frame, tilting your head. You used to turn invisible sometimes just to watch him, but once he knew about that he told you not to, quite reasonably really. It's nice to just observe him again. He's your favourite thing to observe, after all.
"I won't make a list and send it... To the North Pole for St Nick..."
His voice his getting louder and more tuneful. He grabs a pot from the stove and pours whatever's inside - you can smell onions and butter and more herbs - into the mixing bowl, then begins to stir vigourously.
"'Cause I just want you here tonight... Holding onto me so tight..."
You smile softly. Straightening up, you move forward, intending to offer your help with food preparation.
"Baby, all I want for Christmas, is y-"
Dean swings around suddenly and you end up almost nose-to-nose, his singing cutting off with a small yelp. You cock your head and stare at him quizzically. His green eyes are comically wide and his lips are still pursed around the word 'you', the word echoing in the air even as the song continues in the background.
"Thank you, Dean," you say in a serious tone. "But I'm already here, so I got you another present too."
You wink carefully at him, pleased at your successful use of humour. He goes a really lovely shade of pink and you admire the colour for a moment before he steps back, frowning heavily at you.
"Very funny," he snaps. You smile wider; you think so too.