Spray cheap halloween masks with glow in the dark spray and watch your haunted house light up where ever you put them. Leave them in large groups or use only one or two. Either way it's cheap and CREEEEEEPY
Scary Monster on the Ceiling This super-creepy monster is deceptively easy to make. Combine a scary mask and old wig, an old night gown, and some wire hangers in a person-shape. Suspend it from the ceiling with fishing line.