Nerd: As to 'Bonefires' containing bones. Preumably (as mentioned here) the tradition of putting an effigy of "Guido Fawkes" atop the fire only dates from his miserably failed attempt to dissolve Parliament. Was it, in those days, just a new twist to a very old, but little practised tradition?
And in South Wales, swedes are hollowed out to make Hallowe'en Lanterns. The insides can be eaten, but I don't reccomend it!