I assign all of the stupid little things you have to deal with when your life gets spontaneously rescheduled. Like what do you pack when the weather's been fluctuating between 20 and 70 degrees and you don't know if you'll be home for two days or ten? Or should you just assume you'll be stuck there and have your paycheck sent home? But if you're only there two days and your pay's mailed, it means you have to wait to get paid, and if you're there ten, you miss your finals, but...
It's obnoxious.
And the stupid finger prick when you give blood. I have a black bruise throbbing just under the skin inside my arm due to a complication that meant I couldn't even finish, but my finger hurts!