These labels are color-coded literary genre labels for your classroom library book baskets. I laminate these labels onto index cards, and put two binding rings through the card and the loops in the basket. They last forever that way, and I have gotten a few years out of the same labels!
To label my books, I use a large scrap-booking hole punch and punch dots that are the corresponding colors. I tape them either on the binding of the book, or on the front cover.
This has been a great system