I worked on these 3 almost-identical quilts today and did each of them different.
The first one is the pantograph, Popcorn, because it was already on the table.
The second one has wavy lines dividing it up into squares. As an afterthought I added the side-to-side stitching on the spools.
The third one has a feather, double stitched with meandering around it in all the background areas.