Incase it was unclear, each chapter is one day in December. Like the first oneshot is Dec. 1, and so on. Each day is a different christmasy event/theme. Oh! And the picture above is a marvel Christmas desktop thing I made and am currently using! Feel free to save and use whenever! 

And as for ships:

Stony

Parley

ThorBruce

Hawksilver 

ValCarol

ScarletWidow

SamBucky

ShuriJ

(yes i am aware that they are all gay ships, your point?)

Now let's get into it shall we?