First post so bare with me...
Just a random idea, why hasn't there been a clock invented purely for lucid dreaming?

That has multiple alarms on it, voice recording (For both a Dream Journal and to "chant" at you at night I guess), Interval alarms, ect.

It just seems that it'd be at least a minor success, wouldn't be that hard, and should be that expensive (maybe?).

Any thoughts, is there already one, stupid idea?