Binders melt in the attic.
Please don’t store binders anywhere non-air-conditioned.
Don’t store them in the attic, the garage, shed, where they will melt and rust. The stickers will get gooky and creatures will poop on them. The rings will rust.
Keep one or two on hand and then put the rest out in circulation at your school, library, office, etc. or find one of those places near you. In Austin you can also donate and shop for them at Austin Creative Reuse.