Funzo
Funzo was the toy released by Kid First Industries in "Grift of the Magi". It is an obivious parody of Furby including the cute phrases and various types of colors. But many people do not know that the toy was yet programmed to destroy other toys that kids got for Christmas which then had Homer go to people's houses taking their Funzo toys while dressing up as Santa Claus, Bart and Lisa would sing carols to that family. At the end all the Funzo toys were destroyed by Gary Coleman and while their skulls seem to resemble the "Terminator" skull. Their add then appears again in "Funeral for a Fiend" and also one appears on Bart's shelf in "Treehouse of Horror XVIII". The clip of Homer stealing the Funzo toys also appeared in "Gump Roast".
http://i87.photobucket.com/albums/k143/dombrennan/funzo.gif