What's More Important for a Great Halloween Setup: Creepy Decorations, Scary Sounds, or Eerie Lighting?

A great Halloween setup is all about creating the right atmosphere, but everyone has their own idea of what makes it truly scary. Creepy decorations might make you feel like something is watching you, scary sounds can send chills down your spine, and eerie lighting can make even an ordinary room look terrifying.

If you could choose only one for your Halloween setup, would you go with creepy decorations, scary sounds, or eerie lighting? Which one do you think makes the biggest difference?