I've posted before about the Rollbag design I made a while back; Overland Outfitters picked up the design and it's been in production now for a while and it's available on their web site and also at Quadratec.
After OO was finished with the prototype I sewed they gave it back and I added a zipper on the side so it can hang off the back of the seat, I've been using it to carry a 20', 27,000 lb. capacity recovery strap:
The Rollbag works really well on the seat back but I haven't decided if I'll recommend this version to Overland Outfitters.
On my drive back from SEMA I stopped in a Duluth Trading store, they were having a 25% off everything sale and I like some of their clothes. I discovered that they sell a toiletries bag that looks like a miniature Rollbag, so I couldn't resist buying one.
This morning I modified the Duluth bag so that it can accept straps to attach it to things like the roll bar or the grab bar...
The modifications were pretty simple. I sewed a piece of webbing to the side of the bag that Velcro one-wrap can slip through.Velcro one-wrap is two-sided velcro, hook on one side, loop on the other. I used 3/4" double-sided hook & loop (not Velcro brand) I picked up at Harbor Freight.
I also sewed a small length of webbing to the end of the bag to tuck the bag handle into, since the handle won't be needed when the bag is hanging in the Jeep.
The "full size" Rollbag that Overland Outfitters now sells is really handy for many things but I'm not sure if the smaller one will be as handy so I'll keep it in the Jeep for a while to see what I can store in it and if it's useful.
BTW the flashlight holder I made a few weeks ago fits nicely on the grab bar too...