I purchased a regular cargo carrier (steel with 500 pound capacity)for around $80.00 at Camping World. I went to Target and purchased a fifty gallon tub/container with lid. It works great, does not cover your tail lights and if you need to get into the back of your van, just remove the bungee cords and set/move/slide the tub over to the edge. I also used a mike carton next to the tub for incidentals. Tied everything down with bungee cords. Just got back from Florida and it worked great. My wife collects rocks when we are on the road and it is great for that too.