Each organizer is made from 5 plain old folders and some clear packing tape. There are probably 50 -100 staples holding each organizer up on my bulletin board. I have used the same folders for 3 consecutive years. I have had to add a few extra staples a few times each year.
Someday I hope to recycle the folders for good and be a paperless classroom.
Check out this blog: Teach Paperless
Feel free to contact me with any questions.