Make your own item with its own powers!! Be as creative as you want...but you only get ONE item to make!
Lester Boneyfish -- A small, plushy fish that causes small girls to scream when thrown into The Room. Also causes small girls to invent revolting names for their stuffed animals.
I've read all of these replies and most are way too powerful and/or specific. I think the idea is to have an item that appears to do something trivial, the creativity is in the way it is used.
Here's my item:
A small brochure listing local attractions, churches and shops such as I've seen in many hotels. When you open the the brochure, it plays very loud Zydeco music.
Why Zydeco music? WHY NOT!
The Pants. The wearer gets amplified senses. You would be able to see, hear, smell, things at 4 times greater distance, but taste and touch is also 4 times more powerful making pain 4 times worse and sex 4 times better (besides the fact that you're doing it in your slacks :P), tastes 4 times better/worse.
Also, you must fit into them for it to work.
The yoyo. A highly dangerous object. Every time its spun, the user and everything they're carrying becomes incorporeal. It could be used to create impossibly strong and dense materials by phasing different things into the same location or just merely moving around the place by phasing through objects like a ghost.
The power of the yoyo cannot be underestimated. One can turn even simple objects like a spoon into lethal weapons by phasing them into people. Even moreso with objects like a fishing rod - The fisherman of death!
However the yoyo is also the leading cause of death amongst its users. If you're not careful and attempt to spin the yoyo while standing still, you would fall through the ground and become trapped once the yoyo stops spinning. Therefore you need to jump around like a crazy person and stop the yoyo spin before you land.
If the user has the brains and the resources, the best way to use the yoyo would be to activate it alongside a common surfboard and the scissors. You use the scissors to levitate the surfboard while you're standing on it. Then you spin the yoyo. You'll look majorly stupid, but you'll be able to zoom around the place like the silver surfer =)
The rumors surround former owners of the yoyo are both intriguing and distressing. The dreaded serial killer Grande Pescador el Morte is thought to have possessed the yoyo. As well as the unknown Texan cowboy who literally shoved his boots very far up in his victim's behinds. It remains to be seen if future users of the yoyo will use it for a good cause, like creating an object so dense, it forms its own blackhole that'll suck up all the lobbyists in Washington. One could only hope.
This is more in keeping with the objects we've seen. The power is totally random and it's a bit goofy.
"Unless Alpert's covered in bacon grease, I don't think Hugo can track anything."
The Hand Mirror
It's a small, silver glass mirror with brass frame and handle.
When the mirror is tilted glass-side down, the glass with leak a thin flow of water from its center.
The Toe-Nail Clippings
Sucking these will allow you to find an item you have lost.
"You`re right, no human being would stack books like this" - Venkman (Ghostbusters)
The Shoelace, Tying it in a Knot will cause anyone in a small radius that is on foot to stop walking and forget what they were doing for a few seconds and then resume what they were doing previously once the effect has worn off
Hell is other People
The Flashlight: Makes your friend punch you in the mouth when you shine it in his face.
\m/ \m/
Bulb from right hand side bedside lamp:
The holder of he Bulb sees a dull pink hue to anything radioactive, the brighter the pink the more ionising the radiation.
Using the Bulb in a conventional lamp causes nearby paper products to age rapidly, yellowing and crumbling over a matter of hours. Apparently no similar aging effect on anything organic.
Polishing the bulb with the Kleenex from the Room causes torrential rain to fall over the remains of the Sunshine Motel.
Very late to this thread but I had randomly thought of this mini-series today and came acros this. My object.
The Silver Dollar, let's you know if someone is lying. Heads they are telling the truth, tails they are lying. Simply flip the coin after someone tells you something to find out if they are telling you the truth or not.
-Ah, here it is. "Breach Hull - All Die." Even had it underlined.
I know the OP said just one but others did multiple objects.
I had ideas from a spinoff from this series and have a couple.
Key card - like the key but this is an electronic key card. However, it can be used to Jimmy open a lock which would then act like the lost room.
Slipper - totally silences your footsteps even in the creakiest boards.
Water wing - will allow the user to leap and float great distances or can be used with boat and will act as a motor boat.
Back brace - when worn user is immune to attacks. the user can also project themselves somewhere but whilst doing so they are totally immobile.
Flower - deodorizes foul stenches. 10 foot radius outside but 50 feet radius indoors.
A comic book that give whoever holding it have superhero power in the comic, but if you hold it too long you'll become one of the character and stuck in the comic.
shareThe sock/ There is always one sock left. The sock gives his owner the power to 'rise and shine' early.
The stripper underwear: This strange piece of cloth gives you the power to have a sexual feeling about 'Winky Arizona'. Since she died in 1984, this article have a very limited audience;
The Handkerchief: This item gives you the power to have unlimited homosexual sex, as long as you wear it in your rear pocket. Some says it's just a coincidence, and than its power have not been discovered yet.
The rat: Well, an immortal rat.
The ratTrap: You can guess were the rat is.
The soap: You can give people OCD ( I HAVE to wash my hands. Right NOW !), but you have to stuff it in any orifice you have.
(Some people say than if you DP an individual with the Rat and the Soap, he would confess immediatly. ANd then you'd had to wash your hands.