Unexplained noises are best left unexplained.
He invented the Fuse Box Dwarf, a little man who popped out at you from behind the paint cans in the cellarway and screamed, "Dreeb! Dreeb! I am the Fuse Box Dwarf!" Lewis was not scared by the little man, and he felt that those who scream "Dreeb" are more to be pitied than censured.
He held the book up to his nose. It smelled like Old Spice talcum powder. Books that smelled that way were usually fun to read. He threw the book onto his bed and went to his suitcase. After rummaging about for awhile, he came up with a long, narrow box of chocolate-covered mints. He loved to eat candy while he read, and lots of his favorite books at home had brown smudges on the corners of the pages.