I've come up with a different use for it. I have two kids who have been known to get car sick in the past on a few occasions (luckily not in the 4Runner so far).
I keep two of those stackable, disposable, plastic Gladware-type containers with lids there, held in place by the trash bag bracket. They fit perfectly if you get the correct size. If need be, they are ready to be called into action at a moment's notice, and this keeps them right in place where we know where they are at all times.
Pretty gross, huh? But, you gotta do what you gotta do!