The carpet is a large, fuzzy, and light blue square, excellent for conducting electricity. There is a yellow circle on the carpet and inside that circle are two yellow arrows that go counterclockwise.
The carpet is also known as "Experiment 78" and was left in a hidden room in the Mystery Shack for a long time. Eventually it's rediscovered when Soos finds the secret room that the carpet was in. After several people switch bodies around, including Dipper, Mabel, Candy Chiu, Grenda, Old Man McGucket, Soos, Waddles, Sheriff Blubs, and Deputy Durland, and Dipper wins the room from Grunkle Stan, he decides to get rid of it. Grunkle Stan obliges and takes it out of the room.
It works by shuffling on the carpet, such as walking on it or rolling in it, and charging up static electricity. Once the subject has sufficiently charged up, the next person they make contact with will be the one with whom they switch bodies. Template:GFWiki Template:Gravity Falls