These are a set of thirty artificial candles which are networked to react as a group. The candles were placed on tables at my wedding. Normally they emitted a warm candle glow with a slow flicker effect.When any of them was touched, it flared white, and sent a radio signal to the other candles, causing them to flare up as well.
I have since used them at other events as well, including the ITP 40th anniversary party. Click on the images to see greater detail.
Each candle contains a WiFi-connected microcontroller, a set of addressable RGB LEDs, and a touch sensor in the metal base of the candle. A string of lights around the perimeter of the event was connected as well, so that the touch on any candle caused a lighting ripple through the entire event.