I always put a handmade label (usually made from a rectangle of one of the fabrics used in the quilt, edges folded over, and handsewn onto the back). I sometimes use fabric ink or markers to trace whatever it is I am writing (usually a title, the recipient's name, the date, my town and state, and either my name, or the name I use for my *business*). Other times (more often, actually) I trace whatever I am saying with water-soluble markers and then hand embroider over it.