- Construction noise outside your apartment building
- Construction noise inside your apartment building
- Mystery noise
- Imaginary noise
- Kid is not tired enough
- Kid is overtired
- Kid has a poop on the way
- There's a monster in the closet
- There's a noisy castle in the closet
- Mum has a desperate need to get stuff done while kid sleeps
- There's a important event on later that kid will need to be rested for
- It's a day of the week that ends in "day"