The plastic tabs from bread/potato bags can be numbered with a Sharpie and pinned though the opening to your blocks. If you have a fairly wide and long piece of batting you can lay your blocks out in order and roll it up and take it to the sewing machine. You can lay out a whole quilt top on a flannel sheet and roll it up and work on one row at a time too. I once made a "book" with twos pillow block (about 18 inches square) for the "cover" and "back". Inside I laid out some pieces of slick fabric and pieces of fluffy batting alternately. The pieces of the block stick to the batting and you can lift the slick fabric without disturbing them and sew one block at a time from each "page". It is also convenient if you need to take them with you to work on them .(The pages are sewn inside the cover and back by simply sewing the side you want to be the back through all layers close to the fold.