Straight from The Pits of Tartarus

Christmas Headcanons

Jason is waaaay too enthusiastic about Christmas.Like have you met this dork? He plays Christmas Music 24/7 and the Zeus cabin is seriously over-decorated with Christmas stuff. Even the statue of Zeus wears a pixie hat. Piper and Thalia have made it their personal mission to restrain him.

Piper usually dreads Christmas time, since it usually makes the distance between her and her father so much clearer. But this year, it's going to be different. She stays with her dad in the holidays, but gets homesick, and on Christmas Eve her dad surprises her by deciding to head back to New York to celebrate with her friends.

Thalia, of course, spends the holiday together with her brother and her 'sister'.

Everybody is celebrating Christmas at the Jackson's home, and Sally is over enjoyed (if not only a bit worried if they will get food enough to everybody and Percy). Sally also teams up with Will to make Nico eat some more. Paul is just trying to keep all the ADHD demigods under his house calm. Luckily he got his own mini-army in the form of Annabeth, Reyna and Hazel (Calypso is having enough trouble to keep her boyfriend under control).

Piper joins the Jackson Household together wit her dad. At first Sally is panicking a bit, because 'schist that is Tristan McLean, and I don't have food enough for him', but she shortly finds out Piper's dad is super chill about it, and actually praises her food loudly. Leo actually pulls a prank at Tristan, and there is this really awkward moment, before he bursts out laughing and admits he had used it too, and from that point Tristan became a part of the very extended Jackson family.

As said earlier, this is ADHD kids under a very small roof, so they all have to be doing something while they wait. Leo starts improving all kind of things in the house together with Calypso, to make things easier for Sally and Paul, and even though he blames it on the ADHD, it's secretly because he is so glad to be accepted as a part of the family. Percy, Hazel and Reyna (everyone is surprised when they find out she is amazing at making food) helps with the food, and yes, Percy also 'test' if it tastes okay. Piper, Annabeth and Nico (honestly, Nico rocks at decorating things) is decorating the table. Will, Rachel and Thalia manage the music, like seriously, don't touch their playlist because they all agree on that it's perfect. Frank, Tristan and Paul is just trying to help wherever they can.

And then the times comes for singing and walking around the Christmas tree. Lets just say that Percy refuses to sing, even though everyone begs him to. They make a compromise, and Percy ends up playing at his kazoo instead. Annabeth is just low-key thinking about murdering him. Piper's voice is amazing, and everyone is okay with the fact that they are all singing off-key, because dam, at least Piper is singing. Leo and Reyna convince them to sing a spanish Christmas song, which ends up with a very wrongly pronounced lyrics.

And finally it's time for gifts. Rachel have made the gifts herself (since she refuses to use her dad's money), and Leo have done the same. Piper and Reyna just kinda bought what she seemed fitting for the person. Annabeth, Jason and Calypso bough all those small things with a lot of meaning behind. Hazel and Frank bought their gifts together, and they are those kind of gifts, that you didn't know you wanted before you get it. Percy have through his childhood to buy cheap things, so his gifts are mostly meant as jokes, like giving Piper a crown, because she is after all "Beauty Queen". Thalia does the same, and her and Percy secretly have a contest going on about who can make the best jokes out of gifts. Sally and Paul gives all kind of practical things, like something they can use for their mission. Will and Nico just buys the most random things ever. Except to each others, then they are just making fun of each other. Nico literally bought a shirt to Will, where there stands "My Signifiant Annoyance". All the others are cracking up over this.

Since there is so many demigods at one place, they do of course end up attracting a monster. But for once it's not that bad, because honestly, have you seen all those badass demigods at one place? They even manage to finish it off without any of the adults noticing.

In the end all of them agrees, that it was the best Christmas ever.