don't ever give credit card info over the phone when hotels call at night.
if you open the windows in a car, don't or you'll harden your arteries as much as breathing in second-hand smoke. close them and turn the A/C on instead.
gently rub scratches off cd's with a little toothpaste
if ipod or iphone won't work, press the sleep and home buttons at the same time and count to ten or head to the genius bar at the Apple store, where an expert will diagnose it. first go to apple.com to make an appointment so you won't have to wait.