Bear Necessities

 is an unmarked quest in Fallout: New Vegas.

Quick walkthrough
Talk to Lindsay, a child Boomer at Nellis Air Force Base. She is missing Mister Cuddles, her teddy bear. The player can agree to look for the teddy or ignore her. When looking for the teddy bear, it can be found inside the Nellis Hangars among a stack of containers.

Upon returning, the player can tell Linday that Mister Cuddles is dead, which results in Boomers Infamy and loss of Karma. Or give her the bear, in which case she will be very happy.