X2 what soundguy said.
Door side has all those things I use while camping. Chairs, weiner sticks, pie makers, maul, etc....
Backside is where I keep "set up" material. Hose, blocks, chocks, etc... After setting up, I toss my hitch/WDH bars in there, so they are out of the weather.
The middle has a bunch of odds and ends that I might need, but probably not, yet for some reason I feel the need to take them.
I added a piece of carpet to mine. Helps to keep things from sliding around. Hopefully is protecting the tile from damage.