Good idea and probably inexpensive at Big Lots. It looks like file folders fit right in. This would be a nice portable resource carrier for roving teachers and paraprofessionals. The file folder games, record sheets, books and tasks for the day or week and writing implements. Little white boards would probably fit, also.
Great portable room divider with children's art. Could also decorate with anchor charts. Use between small groups - wonder if cork tiles would help with acoustics and also give you a surface to thumbtack your artwork or charts. Could store in the back corner of the room when not in use. Much sturdier than the PVC screen I was contemplating and takes up less floor space.