One of the lessons our librarian teaches every year focuses on where students can read their library books. She does this because she has found that kids check out books one day and return them the next. So she has a few lessons on what to do with your library books, including this one.
With the kids she draws a house and an apartment and adds parts to them. Then she draws pictures of books in all the places they might be kept and people reading anywhere they might read.
The lesson is a worthy one but my favorite part is that every year at least one child mentions reading in the bathroom and our librarian happily draws someone reading on the toilet.