I've had this addition now for a couple of years...the Car Organizer from
Duluth Trading Co.

  I realized yesterday as I was heading in to town for some errands that
it's one of the best things I have added to my low-top westie interior all
purpose 84 Vanagon.  It hangs over the headrest on my passenger front seat
(most of the time) and holds things I use and need to keep close at hand.
It has a wide strap with a quick adjust pack buckle.   If I have a
passenger, it gets rotated around to the rear of the seat's backrest.

  It's become my "office" holding my  job folders  and clipboards, lumber
invoices, pens and thermos, an extra jacket, maps or instruction booklets,
phone, whatever...If I have to go inside, all my stuff is in the one 'bag',
it snaps loose and you sling it over your shoulder.  When something is
needed from the parked van you just open the passenger door and everything
is right there, at eye level in the Car Organizer.   It keeps things off
the dash, I don't have to climb in and rummage around between the seats in
my "console box".   If you have expensive and tempting items aboard and
park somewhere sketchy you can just grab that bag and take all your
valuables out of the van.  Motel-ing it lets you bring your 'office' inside
the room in one easy bag.

  These are sturdy bags, very well made and durable.  I have no interest in
that company other than as a happy owner of some of their stuff, including
my very handy Car Organizer.  Check it out in the link

http://www.duluthtrading.com/store/mens/mens-workshop/truck-car-gear/truck-car-organizers/78072.aspx?feature=Complex_Link_11

  Don Hanson