Apply what you know in an area that nobody occupies

Owning a DJI Phantom is like building your own computer in the 1990s. Things could always be tweaked and modified to meet a higher level of performance. There are always additions that could be added on to make life with a multirotor better. People are innovating with all sorts of extra additions such as lights, landing gear extensions and so on. Some of it is useful and some of it is just bling. I started soldering together my own design of navigation lights, they are useful and they have been selling.