T.K.
Rather than do a kit, I would let the kids imaginations go to work.
Buy a box of gingerbread cookies and buy or make white icing. Maybe another kind of cookie or cracker for roof tiles, chex cereal squares as shutters to the windows, get creative! Go to the bulk candy section of the grocery store. You can just buy what you need by weight, rather than buying boxes of candy. You can get handfuls of whatever they think will look good. Red Licoric whips make awesome walkways and edging around wondows and doors.