http://www.freakingnews.com/Ghosts-Pictures--2503.asp
Whether or not you believe in ghosts, one activity to engage in around Halloween if you have the ability and the nerve, is to listen to ghost stories around a campfire with your friends. Although not necessarily an activity to share with children (proceed with caution), for adults, it can be quite fun. There are several online resources that have free podcasts dedicated to this purpose. One of my favorites is American Folklore, an online story index that have several creepy categories and links to podcasts. It has everything from spooky Halloween stories, to tall tales and myths to folklore. The site also has a category for children so you don't necessarily have to keep this activity adult-oriented.
http://www.americanfolklore.net/spooky-stories.html
Another online site to explore is Halloween Ghost Stories. In addition to featured stories including urban legends, they also have dark poetry.
http://www.halloweenghoststories.com/
Who knows? Perhaps you will be inspired to write your own spooky story or poem that you can share.