If you feel like scaring yourself stupid this October 31, then install the Halloween Theme v2 on your Symbian phone.
The free Halloween Theme v2 S60 3rd Edition theme adds a spooky background wallpaper to your phone's home screen. The image consists of three menacing looking pumpkins staring out of a black background.
The Halloween Theme v2 also tweaks the design of the S60 context menus, applying the traditional black and orange color scheme associated with Halloween. It's a shame that the menu icons weren't given a more ghoulish treatment, however.
If you want a way to dress up your phone for Halloween, the Halloween Theme v2 is worth downloading.