Stretch is one of the (former) quaternary antagonists in Toy Story 3.
Stretch made her first appearance in the scene where she was in the crowd in Sunnyside Daycare.
Stretch made two brief appearances during the first visit to Sunnyside. She is seen shaking tentancles with Hamm, Slinky Dog and Barbie. Later, Stretch was seen playing Poker inside a vending machine, and the Poker table was a See-'n-Say toy.
Then, Stretch won once the arrow hits the duck and the others were mad. After Chunk and Sparks fail to imprison Jessie, Stretch helps them lock her up. During the confrontation, she appeared on a rectangular pipe and after Big Baby threw Lotso away, she left. Later, Stretch made her final appearance where she was in the newly rebuilt Sunnyside Daycare during the credits.
There is a LEGO version of Stretch.
There was also official Toy Story 3 merchandise of Stretch.