Five minute fudge! It's super easy to make, and you can put whatever you want in it, and make it whatever shape you want by pouring into different shaped containers or lay out cookie cutters on wax paper and pour into them (I'd suggest non-chunky fudge for that).
The base recipe (from Rachel Ray) is:
12 oz. semi-sweet chocolate chips
1 cup butterscotch chips
1 can (14 oz.) sweetened condensed milk
1 tsp vanilla
1 cup peanuts
1/2 cup currants or raisins
Spray large pan with non-stick spray and heat on low heat. When pan is hot, mix in all ingredients except peanuts and currants/raisins. When those melt together, turn off heat and stir in peanuts and currants/raisins. Pour into greased container and refridgerate for half an hour. (If you want to make a wreath out of it, pour into a greased 9" cake pan with a saran-wrapped vegetable can in the middle of it, then decorate.)
I personally don't like peanuts or raisins, and I LOOOVE the milk chocolate morsels that Nestle has, so this is the recipe I made and have eaten half of in two days. My husband won't eat chocolate, so I have to. ;) It's awesome!
12 oz. milk chocolate chips
1 cup butterscotch chips
1 can sweetened condensed milk
1 tsp vanilla
1 small pkg chopped hazelnuts
1 small pkg sliced almonds (for cake toppings, the package is a blue baggie about 5in x 5in)
You can also do white chocolate fudge (all white chocolate chips), mint chocolate fudge (I would try milk chocolate chips + mint chips or maybe Andes mints instead of semi-sweet + butterscotch), peanut butter fudge (peanut butter chips or 1 cup peanut butter of your choice instead of butterscotch). And you can make it with whatever nuts and dried berries you want (cherries, cranberries, raisins, golden raisins, etc.), or without nuts at all. There's so much versatility.
I'm also a big fan of movie marathons, but I don't know how well your kids would do with that since they're so little. But maybe a day in front of the TV watching Christmas classics would be fun. You could take breaks between movies to do crafts or go out and play or go for a walk or something.