If there is only one book at ordinary times and there are few things to bring to class, you can prepare a canvas bag with one shoulder.
Matters needing attention in college classroom
As the university classroom is not a fixed classroom, it is necessary to prepare a small schoolbag for class. If it's an early class, just bring the books for the early class. In the afternoon class, only bring afternoon books.
Generally, students who have just started a large class may not be used to it. So freshmen try to sit forward and get used to it.
You'd better prepare a cushion yourself, because your seat may not be anywhere. So you may not get a clean seat. If you have to go out in the middle of class, the mat can also help you occupy space.