Haven't got much yet! There aren't many of us so I really have to guard against going way overboard as I love all things culinary.
2 bottles of vin santo. We ate the 3 bags of cantuccini that were meant to be had with it 
so they will need replacing.
Drinks: already have gin, cognac, lots of whiskies, a Madeira and a spiced rum. Plus the dessert wine mentioned above. Need to get some calvados and maybe some grand armagnac. Port and sherry too, of course. Bailey's for me (I drink that in early December, love a small glass every evening). Probably more to go on that list, but DH is in charge of drinks.
1 bag of Italian shortcake biscuits with buckwheat. Or spelt? Can't remember.
1 jar of gooseberry chutney and one of fig and penja pepper paste. I still need to buy quince jelly. I'm also going to make Nigella's chilli jam.
1 jar of some kind of special pepper that's perfect to pair with cabernet sauvignon (I think? I bought it earlier this year and can't actually remember!) and apparently brings out wonderful flavours in both... DH just laughs every time and says they saw me coming! 
We'll make our own mincemeat soon. Not making a Christmas cake or a pudding this year; ringing the changes with either a chocolate and nut cake or a tropical pavlova.
Just did our dried fruits/nuts/etc order so that's all sorted. Keep ginger, crystallised and in syrup from year to year as I never use all of it at Christmas. Also already had treacle. The only thing I still need to get is golden syrup.
I'll make cranberry sauce and red cabbage ahead of time, both of which I'll freeze. I need to get a jar of redcurrant jelly.
2 tins of Danish butter cookies, 1 tin of mixed biscuits. Probably won't buy any more than that as I like to bake my own for the most part.
I've got some gingerbread bites atm but that's just for me to eat whilst reading CC and planning my Nigelling.
Need to get one pannetone and one pandoro.
Need to buy marzipan and nougat for making our own truffles. Have got candied orange slices and dried rose petals for toppings. Need a bottle of rose water!
There must be loads I'm missing! Will have to consolidate it all into one place and make an inventory.
@Dorriethelittlewitch have you seen the little mini Christmas cakes made in half-size food tins? Such a cute idea for the children to each have their own! Although not much use if they don't want to actually eat it...