I’ve done treasure hunts for chocolates
“I’ve hidden 6 Father Christmas around the room, can you find them”
As well as craft kits
”help, the North Pole elves have run out of slime / chocolate coins. Can you make some more?”
ginger bread houses to decorate (buy them pre constructed)
incredible shrinking machines have been great, so a wrapped box, with a pretend conveyor belt. And a small chocolate button (or any other biscuit / chocolate) one side and a giant one the other. kinder eggs is a great one for this, but the giant eggs are expensive.
stuck in a snow globe ( poundland cocktail fishbowl) with packing peanuts and £1 lights.
Christmas jumper day, wear a jumper as well with an extra £1 for school.
Christmas light bingo cards. You go out and play bingo finding all the Christmas lights on your card.
I know someone who does elf day, the elf brings elf slippers and hats. They eat party food (minature versions of normal food, pizzas, hamburgers etc) and watch elf. i never have the freezer space for this one!