I did this mod for my sewer hose elbow, wheel chocks and leveling blocks that I found on this site.
Bumper mounted tool box
My picture is attached.
I also installed a wire basket above the couch, just to the left the microwave. It is about 18" long and 6" deep. This holds larger, lightweight items like bread, chips, cereal, etc. (Sorry I don't have a picture, but can get you one next weekend if you would like to see it. The link below isn't quite the one I have, but gives you an idea). I would have liked to have a small cabinet above the couch, like the one above the dinette, but went this route because it was easier and saved a lot of weight.
I also installed a paper towel holder over the sink and a wire rack that attached to the top of the bathroom door to hang coats, towels, etc.