I personally own one of these & find it as
helpful as my multi-tool.
-Sits flat against seat back-Adjustable strap secures the organizer to headrest while in the vehicle and serves as a shoulder/carry strap when outside-Accordian-type main compartment for files, papers and notebooks-Zippered center compartment-Front pouches for radio, cell phone, pens and markers-Large open-top side compartments for 2-liter water bottles, thermos bottles, flashlights and folding umbrellas