If you're looking to seriously scare the heck out of a six year-old, then the Axe killer ANIMATRONIC Door is the perfect solution.
Etsy designer 999deadpatricia created the Axe killer ANIMATRONIC Door as Halloween prop that will have kids thinking twice before ringing a doorbell for a mini Kit-Kat. The exterior of the door has a run-down, gritty look, fit for a horrifying insane asylum. The window on the door is substituted for a built-in 22inch LCD monitor that plays a loop video of a psychopath trying to break free for a taste of blood.
Check out the video for the Axe killer ANIMATRONIC Door and watch it in action. It's the best way to deter trick-or-treaters from coming in when candy is low.