Like most of you here, I have an assortment of extras for emergencies of various types in my car. From a boo-boo kit to a full blown trauma bag and from a can of Fix-o-Flat to a Snap On tool box, the possibilities are endless.
I hate things just strewn about, say like the fresh Hell that is the interior of my wife's car. I have a place for everything in my vehicle that I "need" from first aid to a Stanley FUBAR. (shout out to Casket.)
Discounting weapons for this discussion, my most recent attempt and current work in progress is a MOLLE seat back panel from Sunrise Tactical Gear. I recently purchased a tripod system off of the Hide and one of the goodies that came with it was a tripod bag in MC made by these folks that was very well done. So when I saw the label, I jumped over to their site and saw this. What is really cool about it is the fit. Some of these things just don't fit tightly to the seat back, especially when weight is added. Even empty, some sag. These guys laminate a stiffening material in between the cordura that is just the right thickness to keep any reasonable weight tucked flat against the seat.
I've just started to figure out what to mount to it. A LFer was selling a bunch of FS and BFG pouches, including the really cool BFG trauma kit pouch (stocked) so I mounted them for a visual. Need a CAT pouch to go on the lid of the trauma kit and then see what to do with the other pouches. In addition to this, I have an Eagle bag that Geromino recommended years ago that has some heavier stuff in it like tools and a HK flare gun kit so this new set up will augment that.