Little things, like a leaking coffeepot on a Monday morning. A bag of M&Ms that spills its contents completely when I shift on the bed. The two suitcase that seemed like a good idea at the time, but now really don't want to go up the ramp to the door. Inconveniences that make me think of Murphy's Law.
I guess all I can do is store these things away, and use them for my characters. A cycle of cruelty, isn't it?