Storage for single cabs

I thought I would need a $200 aluminum toolbox for the bed of my single cab so I could store my "stuff", fire extinguisher, tools, jumpers, tow strap, etc. I found that there was plenty of space behind the front seat for soft tool bags and so on, but additional storage can be had at your local power equipment shop that sells commercial mowers. They likely sell 14x14 mesh bags that are designed to be slung between the handlebars of a commercial walk behind mower. These bags have two Velcro straps that can be placed around the headrest supports so that the bag hags along the back of the seat back. Cost about $25.