There are lots of silly and spooky decorations that you can create yourself! You might blow up orange balloons and draw jack-o'-lantern faces on them. Or, you could fold a long strip of white paper, accordion style. Cut out a ghost shape, leaving part of the folded sides connected. Unfold the shape, add eyes and a mouth to each ghost, and hang up your banner. Another idea is to use recycled materials in your house to build a monster sculpture. Be creative!