Hallowe'en competition - free idea for somebody. Answered
I just had an idea for hallowe'en that I have neither the time nor the resources to do, but somebody else might.
This would work best if your front door is some distance from the street, maybe with a creaky wooden porch to cross.
Rig a fake wooden front door with a long inch-wide slot, top-to-bottom.
Fill the slot in with a strip of something fragile (styrofoam? balsa? papier mache?). Maybe disguise the strip with smeared bloody hand-prints (especially round the door handle)
Render a chainsaw "safe" (having never used a chainsaw, I don't know if this is possible - take the teeth off? replace the chain with a rubber belt?)
When somebody rings the bell, start the chainsaw behind the door, give it a couple of revs and then cut through the fragile strip, laughing like a happy psycho.
If the visitors are still there, stick one crazed eye up at the door and yell trick or treeeaaaat?
Afterwards, mop the urine and faeces off your front step, replace the fragile strip, and settle back to wait for the next victim.