this 20" canvas bag is perfect. it has tool pocket on the inside which are great for all types of art supplies. large strong durable zipper, and front pockets on the outside. it holds up to 75lbs, and because its on rollers it moves easily. comes in several colors and i found it at Harbor Freights. i have seen them other places but for far more money.
the item number is: 03264 and comes in several colors.