LED candles are a nice way to light up your house during the festive season, but they're a little boring on their own. Over on Adafruit, they show off how to make your own set that totally customisable.
Essentially, you'll just use a RGB LED pixel, set up your own "flickering" rates and colour options, then stuff the whole thing inside a little case of your choosing. It's a fun little project if you're looking to spice up your home around the holidays.
LED Candles: Simple, easy, cheap [Adafruit]