The back of my SUV is lined with three laundry baskets. One contains a few reusable bags on top of a blanket, a sweater, and a full change of clothes (the unpredictability of IBS is such a joy - not). The others are empty and are used to contain purchases so they don't roll around in the back of my car.
Not being an organized human, "organizers" are wasted on me. Sure, I put everything in them just-so when I first get them, but never again.
You don't want to know what my car trunks looked like before I came up with the laundry basket concept back when my kids were little...