Outdoor Halloween decorating ideas include everything from simple decorations to elaborate ones. You may even want to create an entire theme around your party. When you’re thinking about what kind of Halloween decorations to use, consider the type of party you’re having. Do you plan on having a small Halloween party or one with hundreds of guests? How big do you want the Halloween to be? The last thing you want to do is get your party thrown off track because you have too many decorations or you didn’t buy enough outdoor Halloween decorations!