I love your little sewing icon, I have only seen two, one hand stitching and the other sewing on a machine.
I remember buying a holder (wood) for a quilt calendar haven't seen it for years but it would make a good template.
I was trying to thin of a way to flip or turn or take off or put on monthly blocks. Grommets, and ring binder, hmmm must
think about how to eliminate bulk and be able to change or
flip or flip and tuck, something.......
Love, love, love you idea - You have really started something now.....................