Love this stuff, create your monster base, cover in burlap or old clothes and cover them in this mud. Monster Mud Recipe - Joint Compound tinted with Latex Paint & "whipped" using a Drill Mixer attachment.
Recycled spiders from rusted wire and light bulbs for Halloween decorations. You could use the same idea to make lots of different insects - honeybees, lady bugs, a caterpillar (use multiple bulbs), etc.
Amazing DIY Halloween decorations From the Shadow Farm
Create & paint Faux Stone Block - Tutorial You will change the feel of your entire room with this distressed stone finish. Of course, even this stone finish can have a polished look by varying the colors used and by making the stones more uniform in size.
Put a Spell on Someone With 31 Halloween Love Songs