DD is 18 and has ADD. She often doesn't sleep well, which means she is still very tired and difficult to wake in the morning. I bought her an extra loud alarm clock and it doesn't wake her (she doesn't turn it off - it just keeps going while she continues to sleep soundly). She won't consider one of those pads that vibrate under her pillow as she is worried they are a fire risk. At the moment I have to wake her most mornings, but she will be leaving home soon and needs to reliably sort this for herself. Any ideas of deafening alarm clocks of other potential devices? She keeps her room quite light so something that makes the room gradually lighter won't work!