I’m a teacher, and I keep the books in my classroom in labeled baskets. I like having the books organized by categories, such as historical fiction, fantasy, life science, biographies, etc. At home, I wanted to do something similar, but in a frugal way.
I used some leftover plastic bins and I printed some labels. I sorted the books into categories, wrote those categories on labels with a Sharpie marker, and then covered the labels with packing tape to keep them from tearing or wearing out.