Physical project - Mumbai location preferred (other Indian cities possible) I’m planning a small proof-of-concept “haunted house” room where visitors trigger spooky surprises just by moving, speaking, or even changing the temperature around them. I’ve already decided on three (or more) sensor types—motion, sound, and temperature—each of which should set off different effects: • Light changes (eerie flickers, sudden color shifts) • Sound effects (creaks, whispers, distant thunder) • Simple mechanical movements (a door creak, a prop shaking) Because this is an early, budget-friendly build, I only need a straightforward prototype, built by someone in the city Mumbai or who can travel to the city from nearby. Keep the solution modular so I can swap sounds, adjust lighting colors, or add extra props later. If you’ve built any such gadgets before, feel free to suggest small flourishes that won’t stretch the scope. Once the prototype works reliably, the project is complete.