This clip-on ring light for my iPhone ($9) has become an indispensable tool for selfies and, to be honest, photos of my cat. I can't wait to bring this battery-powered, portable light with me on upcoming vacations, because it helps cast the perfect illumination for photos even in the harshest lighting conditions. There are three settings for light, medium, and heavy illumination, which you can use for either front-facing or normal iPhone snaps. At such an affordable price, there's no reason not to pack this in your bag! — Brinton Parker, Assistant Trending Editor