What should I do with my old school notebooks?

So I just finished my finals and am packing up to go home. Thing is, I’m discovering all these notebooks from classes I’ve taken in the last 3 years, and they’re taking up so much space! My school apartment is fairly small, but I have serious pack-rat tendencies… two things that don’t really go well together.

Some of the classes I am interested in, and some of the notes I’ve already typed up. Other classes I don’t care as much about but I tend to wonder, “Maybe they’ll come in handy someday…?”

Should I just bite the bullet and throw them out? What have you other jellies done with similar notebooks, etc.?