Have done the same but little cross hatching so they don't get all wonky down the middle.
Originally Posted by
Diannia
I make mine out of flannel. I cut 2 strips 9x18 and sew them together, clip the corners, turn right side out, press so seam is nice then do a 1/4" or so stitch around it all to keep the seams nice and call it done! They work up fast and are a nice way to use up scraps. Sometimes both sides are the same pattern/design and sometimes they coordinate.