Amazon: Highly rated! OK to Wake! Children’s Alarm Clock & Nightlight 

Only $30 (reg. $40)

More Product Info: 

Adorable color-changing nigh-light teaches children to stay in bed longer so families get more sleep!
OK to Wake! night-light is a soft yellow in the evening, and turns green in the morning (parent programmable) so children know when it’s OK to get out of bed! Parents can also adjust the brightness.
Nap timer allows for napping without disrupting the night-light and morning programmed times!
Also features auto off for night-light and OK to Wake! Light, as well as fun “toe” buttons that children can press to see funny animated faces on the display!
Includes USB cord (you need your own wall adapter), instruction manual, 2 interchangeable face plates.