LED Ring Lights are wonderful for selfies and other shots in low-light conditions. You can always buy them or 3D print one. Adafruit has shared a guide that shows you how to use NeoPixel rings and sticks, an Adafruit Trinket, a 2500 mAh battery, and a few other parts to build your own LED ring light.
You will also need simple tools such as a soldering iron, tweezers, and wire strippers to complete this project. More info is available on Adafruit.