Tip-dyed hair. I love dying my hair. The thing I love about this is that I can have long hair and crazy colors. When I get tired of them, I can cut off two inches, and be back to my natural color and still have long hair.
Another hair trick: How to do beachy waves in less than 5 minutes: Divide your hair into two parts. Twist each section and tie with a hair tie. Run your straighter/flat iron over both of the twist a few times. Untie twists, and you're done.