In which piece of his attire did Sherlock Holmes keep his tobacco?

Sherlock Holmes is a fictional private detective created by British author Sir Arthur Conan Doyle. Referring to himself as a "consulting detective" in the stories, Holmes is known for his proficiency with observation, forensic science, and logical reasoning that borders on the fantastic, which he employs when investigating cases for a wide variety of clients, including Scotland Yard.

His assistant, physician John Watson, describes Holmes as "bohemian" in his habits and lifestyle. Described by Watson in The Hound of the Baskervilles as having a "cat-like" love of personal cleanliness, Holmes is an eccentric with no regard for contemporary standards of tidiness or good order. In many of the stories, Holmes dives into an apparent mess to find a relevant item.

In "The Adventure of the Musgrave Ritual", Watson says:

"Although in his methods of thought he was the neatest and most methodical of mankind, he keeps his cigars in the coal-scuttle, his tobacco in the toe end of a Persian slipper, and his unanswered correspondence transfixed by a jack-knife into the very centre of his wooden mantelpiece. He had a horror of destroying documents, thus month after month his papers accumulated, until every corner of the room was stacked with bundles of manuscript which were on no account to be burned, and which could not be put away save by their owner".