On your front porch at Halloween (or on the stage any time of
the year), is a box that you claim is made from pieces rescued
from a demolished haunted house. The three sides of the box
appear to have siding or shingles, and the front of the box is
made from an old window separated into several panes of glass. In
front of the window are window shutters that can open and close.
On the inside rear wall of the box is a wall sconce containing an
electric candle. You can "shop" for the materials in
your own neighborhood on bulk trash nights between now and
Halloween.
The box is set on a table in the center of the porch. On the
four corners of the table are some lit candles, Perhaps some
eerie music is playing softly in the background. When your Trick
or Treaters arrive you greet them with "Shhh! I was just
about to hold a Halloween seance to call up a ghost that has been
haunting our house for years. If you're not afraid, you can stay
and watch!"
Suddenly the front and rear candles are blown out by the
wind. The window shutters open by themselves. The rear wall
electric candle glows to life, flickers and dies out again.
Inside the box, a transparent head slowly appears, floating in
the air. It opens its eyes! It speaks in an eerie voice:
"Beware! Beware! Halloween candy can cause cavities!
Beware!"
Then the head vanishes, the rear wall light comes on full to
show the box empty, and you begin to pass out treats to all who
haven't fled in fear.