I am on the hunt for ideas for storing along the back window on the inside of the truck. We do not take the camper off the truck so this could be used often, as in my husband's lightweight golf bag or...
I've given some thought to the gun rack idea and think 2 army duffel bags could be hung by the bag strap on the gun rack hooks. Some of the army/navy surplus stores have rather big bags that would translate to a lot of storage volume.