While at an indoor fun fly I saw the Blade Nano QX quad copter. I saw impressive crash survivability and stability and maneuverability. Now that will fly in any room in the house! So I got one and am flying most every day. It is a fantastic little quad. Learning to fly a whole new way and to solder SMD components so I can put navigation lights on it. GREAT little quad.
First navigation light lay out on body. Fine for small indoor space but too close together for outside flying. Gets too small too quickly. Next set of lights will be out on the arm ends.
UPDATE: Finished the new LED arrangement, out on the arms, and it is much easier to stay oriented.