I bought this new towel carrier in the Home goods section at Wal-Mart. It works great for wet or dry towels and carries enough to do 2-3 cars. It is near the irons.
My gf brought home a one of those, and I immediately snagged it for my detailing supplies She bought two more; another one for me (so now I have two) and one for laundry, which was why she originally picked it up.
I used it today and carried all my chemicals and towels for a quick job. Also just as a side note Harbor Freight Tools has the small hydraulic stools on sal for $16.97. It is great for zipping around the lower part of the car.