I always put labels on the quilts that I gift. It was suggested to me to put who it is to, who it is from, the date and city and state, and any info about the occasion such as grad. anniv. etc. The lady that suggested this was in the habit of purchasing old, old quilts. The ones that were the most interesting to her were the ones that had some of that info. on them.
Our church quilt group puts a small label on the back of our quilts and walker bags. Pastor recently had an email from out of state about one of our walker bags. This lady got one on a walker at a second hand shop. She thought we should know how nice it is and that when she is done with the walker she will share it and the bag with someone else.