Kids always look for the newest trends. Whether a style of clothing, a video game, or the latest tech, if it's cool, they need it. Things like this are usually passing fads, but like tattoos, some trends are little bit harder to get rid of than others.
Take these LED implants that you place under your skin, for example.
About the size of a small coin, the Northstar V1 is a silicone-coated chip that's illuminated with LED lights.