As a student, I need to carry a mouse with my laptop, but I often end up busting up mice within a year because the middle mouse button gets pressed on hard enough in my backpack to damage it in short order. I've gone through some good Logitech and Microsoft mice as a result of this, and I'm not a fan of the Microsoft Arc Touch Mouse.
How do I travel with a mouse without risking this kind of damage?
(Note that answers may require recommending hardware, but keep in mind this is not meant to be a hardware or shopping recommendation question and solutions need not recommend any product.)

