I've been making blocks from all those flannel strips. I sewed all the like widths together then cut 30" strips. Now I'm sewing the strips together until I get a 30" square block.
I'm not sewing the blocks together yet. I figure someday when I need a back I'll sew the blocks together to the size I need. I have 12 made so far and probably have enough strips to make another 12.
I'm really enjoying making these: no precise cutting or sewing, kinda brainless.