The iPhone XS is a dense object, packed with all the technology Apple could fit inside. Caviar thought they could do even better. Their Tesla edition (no relation to the car company) integrates a thin, solar-powered battery into the back of the phone, letting you charge the device anywhere there's ample light. The extension is made from carbon fiber, with a gold-plated plate at the top displaying the name of the phone and the charging indicator, and a solar panel underneath. Needless to say, you won't be walking into an Apple Store for service on this, so the company matches Apple's standard one-year warranty with one of their own.