Welcome to the board! Sorry to hear of your father's passing, but I am glad you have kept some of his shirts. My DMIL passed away in March and I kept some of her shirts to make memory quilts for her sons. There are lots of ways to make a memory quilt...some people make teh quilts toataly from teh shirt material and others add some pictures to the quilt. Try a search for memory quilts and see if anything you find is what you would like to make.