Halloween: Glowing Crystal Ball
Cheese cloth and webbing.
instructables.com, DIY haunted tree
Cool DIY Prop. Flaming Spell Book...
Link is blocked! Pretty sure not that difficult to figure out. Foam bricks on a garbage can...good stuff.
Glowing Skeleton Hands
Make a real Witch's Crystal Ball for Halloween (Full Tutorial)
TableTop fan into animatronic! Just remove the blades and add a "head". The head will move back and forth.
7 Easy Halloween Decoration DIYs That Will Scare the Daylights Out Of Your Guests
Diy moss http://poolandpatio.about.com/od/holidaydecoratingideas/ss/Halloween_Prop_Fake_Moss_2.htm