There was a quilt on one of the Facebook sites just last night that I liked and will keep it in mind. It was simply half square triangles arranged to make a zigzag going the length of the quilt. Easy enough and you can adapt this to any size blocks you want to work with to best advantage with the shirts you have. Half of the triangle will be from the shirts and the other will become the background. You may want to use yardage so the background is consistent? But that's an easy one.
I don't know how the shirts you have would go together into a Log Cabin but having the central hearth may depict the relationship you had with your husband. I had to smile at myself when I finished the quilt using my husband's shirts. With his shirts in the quilt on my bed, I'm still "sleeping with him".