My friend made a quilt using a second friend's husbands knit polo shirts. She cut the front of the shirt off at the shoulder seams and made squares. Each square had a little of the button pocket left on and if they had any logo or design she left it too. Then she added a small triangle of fabric at the neck and stitched it closed. She ironed on interfacing and added a sashing. Some of the shirts were cotton so she left on the pockets.