To help my kindergarten and first grade students remember to bring back their library books, when they forget them on 'library day,' I have made stickers with a design program (Print Shop Ensemble III or Avery Kids). I use regular mailing labels that say 'MOM, please help me find my library book and get it back to school.' Also a cutesy color picture is on the sticker. Yes, the children love to remove those stickers, but fortunately I have my K-1 classes near the end of the day. So far, the success rate of books returned the next day is about 40%.