Stealth Boy (Fallout: New Vegas)

The Stealth Boy is a consumable item in Fallout: New Vegas.

Characteristics
The RobCo Stealth Boy 3001 is a personal stealth device worn on one's wrist. It generates a modulating field that transmits the reflected light from one side of an object to the other, making a person much harder to notice (but not completely invisible).

Side effects
While they seem to not have any adverse effects on humans, Stealth Boys increase the risk of schizophrenia in super mutants. This is especially dramatic in the case of the nightkin, who, as permanent Stealth Boy users, nearly always show one or several symptoms of paranoid schizophrenia, such as paranoia, hallucinations, and/or delusion. Doctor Henry in Jacobstown is researching these side effects, hoping to develop a means to help the nightkin.

Locations

 * One can be found in the Goodsprings schoolhouse, in a locked safe (Lockpick 25).
 * Another is carried by Joe Cobb.
 * Several can be found at the REPCONN test site.
 * One can be found inside, next to the dead nightkin near the front door.
 * Another can be found in the basement, on one of the tables in the room with the sign reading "Food".
 * Veteran Atticus in the Caesar's Legion safehouse can give two to the player for free, each time they encounters him there during his visits.
 * The repeatable side-quest Caesar's Favor can provide a random supply of Stealth Boys each time, sometimes in very large quantities (up to 95 reported).
 * A high reputation (liked or idolized) with Caesar's Legion may be required.
 * One can be found in the middle of Jack Rabbit Springs, beside a skeleton found lying near an upright post visible on the hillside.
 * Approaching the cattle pen at Brooks Tumbleweed Ranch reveals a nightkin who offers to sell you a 'wind brahmin' (a tumbleweed) for all your caps. Originally he will then give you a Stealth Boy as a gift; killing the nightkin afterwards (or pickpocketing him) produces another Stealth Boy, as well as all your caps back. But with the game patch released July 7–8, 2011, he will no longer give you a Stealth Boy and will take all of your caps instead, and you can only get one Stealth Boy from the nightkin by either killing or pickpocketing him.
 * One can be found in the REPCONN Headquarters behind a locked door (Lockpick 50) in a container on the top floor.
 * With the add-on Old World Blues, passing the "Robot Compliance Test" to upgrade the stealth suit Mk II at the X-13 research facility will yield a Stealth Boy in the reward safe. This test and three others can be repeated and give random rewards each time, including Stealth Boys.
 * With Fallout: New Vegas patch 1.4.0.514, Stealth Boys may randomly spawn in ammunition boxes.