Other items: Pad of tracing paper. (Saral graphite transfer paper is a plus.) White artist tape or low-tack masking tape. Drawing pencil and eraser, Ballpoint pen.
To make your in-class experience more productive, please bring at least one 3" x 5" line pencil sketch with you to class for your first plate's image, if possible. For inspiration, if unfamiliar with etching, look at any favorite pen and ink drawings in a style and subject matter you enjoy.