This is simply insane The Paper Airplane Drone Kit allows you to create custom aircraft remotely controlled by your smartphone. The device is robustly designed to withstand falls and the force of impact.Rechargeable and battery operated.
Build your own Linux-powered cell phone with this awesome Raspberry Pi phone project! Make and receive calls from a Raspberry Pi using the FONA GSM cell phone module and a PiTFT display. The best part (Tech Projects Phones)
Its called the Ring Clock, and is meant to be a time telling device worn on one of your fingers. It allegedly uses ultra-thin mono-color LEDs and a ultrathin rechargeable lithium polymer battery (Wearable Technology)