Duane’s trick for packing the minivan for a road trip:
Minivans are great for storage, until you have a third child and have to pull up the extra seat in the back, thus cutting your luggage space in half. Next time you’re playing jigsaw puzzle with the bags and trying to figure out how high you can go without running the risk that something with slide and bonk your oldest in the back of the head, take a moment to lift up all the headrests for each seat in that third row. This effectively creates a wall between your child and your bags. You can gain close to a foot of extra packing space while still protecting your little one’s noggin.
I would add tie-down reinforcement when packing bags that high. Things will fly around the car if there’s a crash.