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)
LED Ceiling This is an interesting concept created by Seo Dong-Hun that allows you to create on the ceiling the light shapes you want. Literally, you can paint the ceiling with light. Imagine the artworks that would result from some people’s imagination.