The Fake Immunity Idol
You know it as:
The ingenious necklaces made using beads, resin, feathers and diabolical know-how.
Why we like it:
Bob, the grizzled MacGuyver/boy scout, fashions and then fobs off the faux idol on misanthropic Randy, a move that changes the game when Randy falls for it and is humiliated (with accompanying laughter) and voted out of Tribal Council. The second idol was ineffective, but it made a valiant effort to shake up the game further.
Where else you've seen it:
As a very lame stick that last season's Ozzy unsuccessfully tried to put into play.