Put a tablecloth backwards on the wall so the flannel is facing out towards you. Then put your blocks up on the flannel. You can easily re-arrange them any time you want-as many times as you want. We do this in our quilting group. We have about 4 table cloths hanging around the room so we can all use them at different times. Then if you are really careful you can even take the table cloth down with your blocks inside. Just carefully roll the table cloth up or carefully fold it. Or you can take a digital picture of your blocks before you take your table cloth down and then just put it up again some other time.