Rivals would design gingerbread houses of their opponents houses and
burn them in the oven, perhaps with a ginger bread replical to boot.
Just for fun, mold the gingerbread in a manner most likely to make the
effigy explode in the oven like a poorly made clay art project.
People's heads asploding! Weee! People drowing in an 8 ounce glass of
2% milk at 3 AM. Feed a ginger bread man to the dog. If you've seen
enough Saturday Night Life, you could make a gingerbread Gerald Ford
and feed him to a pack of wolves. ( see
http://www.danacarvey.net/images/brokaw.jpg )
What other spooky things could be applied to such a festive tradition?