RE: I Can't Wake Up! Alarm Clock - The MOST annoying and effective alarm EVER!
These alarm clocks are not effective. If too annoying an alarm clock type people just ditch the alarm clock.
Best (most effective) type of alarms are those which actually make you get up. Little runners or “exercise” mats.
The best alarm clock would be a programmed bot which runs away from you, always staying 2-3 foot ahead and goes all the way to the kitchen, or wherever your smart coffee machine is. A coffee machine programmed to start as your alarm rings.