Besides the office supply section of Walmart, try the housewares. There are vertical racks there too. Or, I've glad kluck at resale shops! I keep the plastic on them until it starts to break at the seam or somehow rip...I also add on that little side label-A,B,C,D...which is corresponding to size of dies and what shelf they live on in my repurposed tv entertainment center! And the inventory sheets, so I know where each is when I need it......