Chum detonator
The Chum Detonator is an item that is seen in the episode Jailbreak!. It was invented by Plankton (though the soap part of it was carved by the Whale Cellmate).
Appearance
The Chum Detonator appears to be a combination of Plankton's chum and a simple bar of soap. It also has wires going through it.
History
The Chum Detonator was first used by Plankton to blow apart a wall in the Bikini Bottom Jail. It was successful but the Prison Guards covered up the large hole with their bodies. However, they got stuck in place and Plankton and his cellmates went out through the front door.