Once when I needed to entertain my daughter while we were
driving somewhere, I said, “Let’s pretend that, rolling along outside the
window, there was a little ball that would pick up trash and boxes and trash
cans, and that as it collected items it got bigger and bigger, until it was picking
up houses and buildings, and that there was happy music playing that sounded like this (I hummed a bit), while hundreds
of citizens called out for help that would never come.”

Her little eyes got really wide.  

She was very quiet for the rest of the ride.

(Thanks for the e-card, Karissa.)