Ours is a “routine for bed and sleep” box.
So there are new PJs for DH, DD and I every year (a new pair mid-winter is always useful).
A lush bath bomb (festive for DD and relaxing for me) - dd has her bath on 24th, I grab mine when I can before back to work in early Jan. some years, I find a nice but different shower gel for DH.
A Christmas beer for DH - he’s a fan of craft beers.
A hot choc for everyone - we like the wooden spoon with an ice-cube type lump of chocolate on the bottom types (and some come with a pipette of brandy for DH or I to enjoy a festive version...).
I also put in a plastic Santa plate and glass that I had bought when dd was a toddler - she used them all December and half of January when she was small, and they still come out for Christmas. Dd uses them to put cookies she’s baked and a glass of milk out with her stocking(which is also in the box).
Last 2 items are her hot water bottle with a snowman cover (also many years old and used all winter) and the family copy of “‘Twas the night before Christmas.
Lay out stocking and snack, festive bath, new cosy pjs, hot choc snuggled up on couch, then bed and the book with HWB warning her up for sleep.
She’s always known that Mum made CEH though, we don’t do Elves in our house. (At least, not elves that come to visit - they’re always too busy at the North Pole).