Kids crying boredom? Give them a tissue.
Helena recently stayed over at her grandfather's for a night, and though she'd mildly protested the arrangement at the start, when she came home she was pleased to tell me, "I didn't get bored at all!"
She handed me a handful of tissue, which turned out to be a hospital's worth of very delicate children with various illnesses.
The one on the left has measles, the one on the right was undergoing an operation.