If you were looking for the article about the episode, then see Idiot Box.
The Idiot Box is a brown cardboard box that first appears in the episode "Idiot Box." SpongeBob uses it for imagination.
The box is an ordinary-looking TV-shaped box, but can transmit sounds from SpongeBob and Patrick's imagination.
Role in episode
In "Idiot Box," SpongeBob and Patrick use their imagination inside the box. At the end of the episode, the box is taken to the dump with Squidward inside. Somehow, the box is returned to Squidward.