We have resisted buying one up to now.
DD1 (3.6) and DD2 (11 months) are in together.
DD1 has always been an early riser and it looks like DD2 is going that way too. We have black out liners on the curtains and have bought one of those exra 'stick on' black out blinds which has helped a bit.
We are finding the monrnings 5- 5.30 am most days very draining.
In fact DH has been sleeping lots on the sofa bed for this reason. Girls coming into our room very early!
So now we are wondering if we should try one of those clocks - the ones with the eyes??
Do they work??