The annual walking tour of unconventional gingerbread exhibits returns to Hillsborough’s downtown shop windows this holiday season from December 7 to January 5.  The event celebrates artistic sculpture: creations can be made of any material as long as the visible elements are edible. The public is invited to submit creative interpretations of this year’s theme, “Winter Wonderland” within the Adult or Youth & Family categories; registration is open Nov. 1-27. Voting for People’s Choice Awards will take place through Dec 20 and winners will be announced at the town’s Solstice Lantern Walk on Dec 21.