Separate everything into three piles: a) stuff you use all the time, b) stuff you use occasionally and c) emergency supplies. If it does fit in one of these three piles, it shouldn’t be in the car. Go through your piles, putting similar things together. Next, decide where things that are essential should go. For example; emergency supplies should go in the back, tissues and hand sanitizer in the console, and CD/entertainment items in the front. Floors should never be a storage option.