I need a Lullaby Pleasee!?

I'm a "singer" and I don't find being able to sing a gift anymore since you can make anyone sing with just a bit of auto tune and vocaloids and such. Because of this, I don't sing much at all. My boyfriend adores my voice and asked me to sing him a lullaby multiple times (he has sleep insomnia and he uses it as a perfect chance to hear me sing) but I never have anything to sing for him. Do you know any songs that would work? Thank you soooo much(: