I didn't want to spend $40 on a kids clock but boy has this worked for us!!!!

It has kept my twins in bed in the am for an extra hour every morning. Sometimes they see the light is on and go back to sleep sometimes they just read books in bed till it goes off.

Also it has done wonders for my dd who was having issues with waking several times a night to go pee pee.

Highly recommend!

http://www.amazon.com/gp/aw/d/B005LKQCHY/ref=mp_s_a_1_1?qid=1386158139&sr=8-1&pi=AC_SX110_SY165_QL70