The SpongeBob Wiki has a guideline regarding the use of image galleries — collections of episode screenshots are no longer allowed on galleries due to potential fair use violations.
Lucky peanut
From the SpongeBob Wiki, the SpongeBob encyclopedia
The lucky peanut is something SpongeBob finds in the Kelp Forest. It appears in "A Cabin in the Kelp."
Description
It is a regular peanut but it also has the features of a shellphone.
Role in episode
SpongeBob finds it while stuck in the Kelp Forest. He almost eats it, but decides to keep it. When he gets a phone call from Pearl, he thinks the call is coming from the peanut, but then realizes it's coming from his shellphone. He still thinks that the peanut got a call too, but it turns out there was no battery on the phone.