I had a SUV for years. Sometimes hidden in plan site is best. Instead of stuffing a dozen items in different areas of the vehicles that you may or may not be able to access due to time or urgency, do what I did.

Pack up your gear into a your carry bag (backpack, duffel, etc) and then put the bag in a beat up cardboard box to sit in your cargo area. Maybe even write, 'Goodwill' or 'Books' in bold letters on the side. You should be able to get your kit into a 12x12 box.