What common household items/actions do your cats know the purpose and meaning of?

Willie knows that when I pull out my makeup bag, it means I'm leaving. He has a fit when he sees it because he hates for me to leave! Rocky knows when I get a coffee cup out of the cabinet it means I'll possibly "spill" a little milk for him to lap up (I know, I know). Allie knows when I turn off the tv at night, it's bedtime so she races to the bed. It would be interesting to know what things other cats recognize and how it affects them.