I have only donated a few, but of those 3 the first one I didn't put anything on it. The second one I sewed my "signature" on with my machine. Nothing fancy just my initials and the year. Just like I would put my name on a picture. I have since purchased some small satin labels.. 1" x 2". I sewed that on the quilt... if the person who wins the quilt could remove it if they wanted too