So everybody uses the plastic holders for their scrapping paper. I watched a video on you tube that you could use the "if it fits it ships for the same price" box from the post office (and they are FREE). I had this box that my mom sent to me filled with plastic canvas. It is the same size as the medium box at the post office. So i measured my 12x12 paper and cut the box (bottom pic). I then used the other piece of the box for my 6x12 paper (top pic).