If you have a projector in your sensory room & are running a theme in there to celebrate Halloween, these ambient environments found on YouTube, would make be great enchanting visuals on a blank wall, keep the sound up to for fabulous sounds of cauldrons bubbling, fires crackling, ghosts, heavy rain, thunder and spooky music.
WITCHES LAIR AMBIENCE: BUBBLING CAULDRON, POTIONS, FIRE & CRUCHY SOUNDS
HALLOWEEN AMBIENCE: CAULDRON SOUNDS, GHOSTS, NATURE & HALLOWEEN SOUNDS
HALLOWEEN AT HOGWARTS , GREAT HALL FEAST, HARRY POTTER INSIPIRED ANBIENCE
HARRY POTTER MUSIC & AMBIENCE / RAINY NIGHT AT HOGWARTS