You can get as elaborate as gingerbread houses without the baking.
Use almond bark (the white stuff you melt to dip pretzels in...well, you
and I don't, but some people do) as glue and snow. Melt in microwave and
pipe into place. Stick candies on when warm, and hold for a minute and
they will stick. Ditto for putting the parts of the house together.
Hint: do the decorating before assembly.

I know this seems moronic, but for the cake decorating challenged, like
me, what a godsend.