It Came from Beneath the Sink! is a novella written by R. L. Stine. It was published in 1995. It is book number 30 in the Goosebumps book series. It was also adapted for as an episode in the Goosebumps television series.
The title is an homage to the film It Came from Beneath the Sea.
Description[]
Katrina and her brother Daniel find a living "sponge" underneath the sink in their new house that turns out to be a monster that causes bad luck for anyone who finds it.