You could make giant lollipops with doll rods from the hardware store and a hula hoop (or something similar) covered with cellophane.
You could use that "spray on snow" to "frost" your windows and mirrors.
I think I remember a Chocolate Lake in the game, so a Chocolate Fountain would be a good idea.
You could use cardboard boxes to build a GingerBread house.
I don't know what your budget is, or where you're located, but
this company has the CandyLand cardboard figures.