Having just made several flannel baby blankets, I think they would make good lightweightlap quilts for this project idea. Missouri Star Quilt Co has a tutorial on making them. They are about 35" square, self bound with a mitered-corner border, very attractive, and quick and easy to make. They take 2 yards total of flannel (1 1/4 yards of one color and 3/4 yard of contrast; I buy 2 yards of each and make two blankets, reversing the colors) and it would be easy enough to add a label for a name before stitching the two pieces together.