Store this one in the why-didn't-I-think-of-that hair files: a Connecticut woman has come up with a way to make wearing hair elastics all the more convenient. After years of wrapping elastics around her wrists just in case ponytails might be an option for the day's needs, marketer Karin Zannella grew tired of the unsightly red marks they left behind. Enter her new invention: Hairbanglez. Available in two sizes (skinny for $16, classic for $20), the just-released jewelry is designed with special grooves to hold a single elastic band in place. While the bangles are currently only available in black, Zannella has plans to launch more colors in the future. So spare the hair (your arm hair, that is), and give these clever cuffs a try. Oh, snap.