The Playbulb Candle came out of a Kickstarter campaign from MiPow and is a fun little accent piece. Naturally the manufacturers recommend ordering several to get more of an effect. You can control them all separately using the free Android or iOS app. The brightness and colour are controlled via Bluetooth, and the LED candle can flicker like a real one or shift through the colours of the rainbow. It ships with several scented discs to also impact the mood you're looking for. 3 AA batteries should keep the Candle going for a couple of months, though they do not ship with the device so make sure you have some on hand.
An unexpected and cool feature is being able to pull a photo from your camera roll, maybe from a scenic spot you've visited, and use an eyedropper tool to choose a particular shade from the image for the Candle to display. You can even turn the Candle upside down and put a real tealight candle in the shaped base, so you have an actual flame going plus the LED colour of the Playbulb Candle at the same time.