Hosting a halloween party? Need inspiration? Hitchcock is always a good start. You’ll want these for the thrill, for the little jolt down your spine every time you turn on the lights or turn a corner. For the unsettling feeling your guests will have when they do a double-take when something changes as they walk down the hall. A fair warning, these items are not for the faint-hearted. Proceed at your own risk. (Above: Ominous Visitor Shower Curtain, thinkgeek.com, $17.99).