It's OK Starshaped, you don't have to change your colour theme every year, only if it clashes with new decor!
I make mincemeat, and sugar crust pastry for mincepies, proper vanilla ice-cream made with egg custard and double cream; also chestnut stuffing and carrot and parsnip puree which are frozen in advance for Christmas lunch. I cook a gammon joint which we have hot on Christmas eve, and it provides cold meat after that.
I made a throw for the sofa last Christmas, and usually make a floral centrepiece for the dinner table, but shopping for fresh flowers was thwarted by the snow last year.
I try to make some sort of wreath or similar for by the front door, and customise bought decorations. If you buy a plain faux wreath or garland, you can decorate them as you wish and simply remove the decs and replace with different the next year. I have a box of inexpensive baubles and stuff for outside decs, doesn't matter if they get snowed on as we have no porch. For inside wreaths and garlands, you can use much posher decs and people will think you have spent a fortune.