My small addition to this thread:
I made a mold out of Oogru (diy sugru-like silicone mix), Great Stuff foam, and a box. Finished 4" casts of cement and hypertufa munnies. ;p
Electronic Textile voodoo doll that has individual LEDs on his head that light up depending on where you stab him;p
And a handful of Halloween eyeball marbles;p
