Want to bling up your quad copter - or just make it easy to tell orientation even in daylight.
Try these lillypad LED arrays they are super bright and can change colour depending on your mood or you can get them to cycle through the colours.
Not only limited to Copters you could use them on planes or even a safety light on your bike.
They run on 12V and weigh in at 5g
They also fit great under the arms of your flip Multirotor.