I did a Halloween Show a few years ago. I bought the Trick or Treat bags and put each person's catalog and order form, a pen, a business card and a piece of candy attached to a recipe card.
We did this as an Open House so we just set up a buffet of different foods. If I remember right I made the Mini Pumpkins with the Mini Fluted Pan, the carmel dip, and a few other I can't think of right now. I also used the Large SA Bowl as a punch bowl. We put a colored soda with dry ice to make it boil and bubble.