Gentle hum a lullaby:
Ceiling fan soothes sleep.
I had almost forgotten how much I love ceiling fans, they really are one of my favourite things: well engineered ones, at least, whose motors are scarcely - perhaps only subliminally - audible... rather than those wobbly, rattly contraptions that threaten at any moment to tear themselves from their mountings... the kind you mostly find in China.
I used the ceiling fan in my bedroom for the first time last night - even though the temperature didn't really warrant it - and enjoyed the best night's sleep I've had in months. I've decided I want to live in a house with ceiling fans, even if it's in some northerly climate where there's no actual need for them to keep things cool.