Mine stays pretty empty cuz hubby is anal about it staying clean. We do keep our car wash bucket and all the cleaning supplies in the back. So fess up and tell us what all you keep in the back of your vehicle.
My husband is the same way. The car must always be clean and with nothing in it. If I leave anything, like even try to leave a sweater in the back seat just incase I ever get cold he is always bringing it in the house on me.