I decided to up my Halloween game this year, and I started to build a prop that will play Halloween themed songs and sound effects, but could be remotely triggered with an IR remote to play jump scares. The box would also have a PIR sensor to trigger playing a certain audio file that would alert me to approaching *visitors*.
I would combine this with my Adafruit Trinket powered Jack-o-lantern, and mist-making prop to increase the scary atmosphere.