This hair tool looks like a sex toy but will give you perfect beach waves:

Get your mind out of the gutter–this is a hair tool. Called the Sultra Bombshell Cone Rod Curling Iron, its nubby texture helps to grip fine hair. Better grip means a better wave or curl, and the tapered quality means you have better control over the size of the waves. Guido Palau used it on the ponytails at the Alexander Wang show–alternating with another iron–to make them wavy.