Hello everyone. My mother is extremely hard of hearing, and having to shout answers to her questions over and over again (because of her loss of short-term memory) is about to drive me crazy. I recall that some years ago there was a type of board that children and others used that had a dark slab with a cellophane-like grayish plastic sheet over it, and if one wrote on the sheet using a non-leaded pencil, the written areas would stick to the slab, making the letters appear black against the otherwise gray background; the writing was "erased" by pulling up the sheet so that it no longer adhered to the slab. This would be perfect for communicating with my mother, but I haven't seen one in a long time and I can't remember what they were called. Does anything know what they're called? I hope they still exist. Thanks, Bob.