Most cars that I have owned had a number of storage nooks that the driver could reach. The ones in the doors were big enough for a half-dozen magazines, though I usually used them for maps and trash. My Lexus also has a nice dropdown sunglass compartment in addition to one near the CD; it has a drawer beneath each front seat.
A good organizer for the midline floor space helps, but it seems to me that the lower half of the Tesla front door has empty space; the steel bar that protects from T-bone collisions can't take up all of that space.
More ideas?